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< a href = "lfg_8c.html" > Go to the documentation of this file.< / a > < div class = "fragment" > < div class = "line" > < a id = "l00001" name = "l00001" > < / a > < span class = "lineno" > 1< / span > < span class = "comment" > /*< / span > < / div >
< div class = "line" > < a id = "l00002" name = "l00002" > < / a > < span class = "lineno" > 2< / span > < span class = "comment" > * This file is part of the Aaru Data Preservation Suite.< / span > < / div >
< div class = "line" > < a id = "l00003" name = "l00003" > < / a > < span class = "lineno" > 3< / span > < span class = "comment" > * Copyright (c) 2019-2026 Natalia Portillo.< / span > < / div >
< div class = "line" > < a id = "l00004" name = "l00004" > < / a > < span class = "lineno" > 4< / span > < span class = "comment" > *< / span > < / div >
< div class = "line" > < a id = "l00005" name = "l00005" > < / a > < span class = "lineno" > 5< / span > < span class = "comment" > * This library is free software; you can redistribute it and/or modify< / span > < / div >
< div class = "line" > < a id = "l00006" name = "l00006" > < / a > < span class = "lineno" > 6< / span > < span class = "comment" > * it under the terms of the GNU Lesser General Public License as< / span > < / div >
< div class = "line" > < a id = "l00007" name = "l00007" > < / a > < span class = "lineno" > 7< / span > < span class = "comment" > * published by the Free Software Foundation; version 2.1 of the License.< / span > < / div >
< div class = "line" > < a id = "l00008" name = "l00008" > < / a > < span class = "lineno" > 8< / span > < span class = "comment" > *< / span > < / div >
< div class = "line" > < a id = "l00009" name = "l00009" > < / a > < span class = "lineno" > 9< / span > < span class = "comment" > * This library is distributed in the hope that it will be useful, but< / span > < / div >
< div class = "line" > < a id = "l00010" name = "l00010" > < / a > < span class = "lineno" > 10< / span > < span class = "comment" > * WITHOUT ANY WARRANTY; without even the implied warranty of< / span > < / div >
< div class = "line" > < a id = "l00011" name = "l00011" > < / a > < span class = "lineno" > 11< / span > < span class = "comment" > * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU< / span > < / div >
< div class = "line" > < a id = "l00012" name = "l00012" > < / a > < span class = "lineno" > 12< / span > < span class = "comment" > * Lesser General Public License for more details.< / span > < / div >
< div class = "line" > < a id = "l00013" name = "l00013" > < / a > < span class = "lineno" > 13< / span > < span class = "comment" > *< / span > < / div >
< div class = "line" > < a id = "l00014" name = "l00014" > < / a > < span class = "lineno" > 14< / span > < span class = "comment" > * You should have received a copy of the GNU Lesser General Public< / span > < / div >
< div class = "line" > < a id = "l00015" name = "l00015" > < / a > < span class = "lineno" > 15< / span > < span class = "comment" > * License along with this library; if not, see< / span > < / div >
< div class = "line" > < a id = "l00016" name = "l00016" > < / a > < span class = "lineno" > 16< / span > < span class = "comment" > * < https://www.gnu.org/licenses/> .< / span > < / div >
< div class = "line" > < a id = "l00017" name = "l00017" > < / a > < span class = "lineno" > 17< / span > < span class = "comment" > *< / span > < / div >
< div class = "line" > < a id = "l00018" name = "l00018" > < / a > < span class = "lineno" > 18< / span > < span class = "comment" > * Lagged Fibonacci Generator for Nintendo GameCube/Wii junk fill.< / span > < / div >
< div class = "line" > < a id = "l00019" name = "l00019" > < / a > < span class = "lineno" > 19< / span > < span class = "comment" > * Based on Dolphin emulator' s LaggedFibonacciGenerator (CC0 licensed).< / span > < / div >
< div class = "line" > < a id = "l00020" name = "l00020" > < / a > < span class = "lineno" > 20< / span > < span class = "comment" > */< / span > < / div >
< div class = "line" > < a id = "l00021" name = "l00021" > < / a > < span class = "lineno" > 21< / span > < / div >
< div class = "line" > < a id = "l00022" name = "l00022" > < / a > < span class = "lineno" > 22< / span > < span class = "preprocessor" > #include " < a class = "code" href = "lfg_8h.html" > lfg.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00023" name = "l00023" > < / a > < span class = "lineno" > 23< / span > < / div >
< div class = "line" > < a id = "l00024" name = "l00024" > < / a > < span class = "lineno" > 24< / span > < span class = "preprocessor" > #include < string.h> < / span > < / div >
< div class = "line" > < a id = "l00025" name = "l00025" > < / a > < span class = "lineno" > 25< / span > < / div >
< div class = "foldopen" id = "foldopen00026" data-start = "{" data-end = "}" >
< div class = "line" > < a id = "l00026" name = "l00026" > < / a > < span class = "lineno" > < a class = "line" href = "lfg_8c.html#a2f32611fcb5d9160c4bd4b6f2f1c2fa9" > 26< / a > < / span > < span class = "keyword" > static< / span > < span class = "keyword" > inline< / span > uint32_t < a class = "code hl_function" href = "lfg_8c.html#a2f32611fcb5d9160c4bd4b6f2f1c2fa9" > swap32< / a > (uint32_t x)< / div >
< div class = "line" > < a id = "l00027" name = "l00027" > < / a > < span class = "lineno" > 27< / span > { < span class = "keywordflow" > return< / span > ((x > > 24) & 0xFF) | ((x > > 8) & 0xFF00) | ((x < < 8) & 0xFF0000) | ((x < < 24) & 0xFF000000); }< / div >
< / div >
< div class = "line" > < a id = "l00028" name = "l00028" > < / a > < span class = "lineno" > 28< / span > < / div >
< div class = "foldopen" id = "foldopen00029" data-start = "{" data-end = "}" >
< div class = "line" > < a id = "l00029" name = "l00029" > < / a > < span class = "lineno" > < a class = "line" href = "lfg_8c.html#a672ca5afd8a74c736fed44e0a89df900" > 29< / a > < / span > < span class = "keyword" > static< / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "lfg_8c.html#a672ca5afd8a74c736fed44e0a89df900" > lfg_forward< / a > (< span class = "keyword" > struct< / span > < a class = "code hl_struct" href = "structngc__lfg__ctx.html" > ngc_lfg_ctx< / a > *ctx)< / div >
< div class = "line" > < a id = "l00030" name = "l00030" > < / a > < span class = "lineno" > 30< / span > {< / div >
< div class = "line" > < a id = "l00031" name = "l00031" > < / a > < span class = "lineno" > 31< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > ; i++) ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] ^= ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i + < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > - < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > ];< / div >
< div class = "line" > < a id = "l00032" name = "l00032" > < / a > < span class = "lineno" > 32< / span > < / div >
< div class = "line" > < a id = "l00033" name = "l00033" > < / a > < span class = "lineno" > 33< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > ; i < < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ; i++) ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] ^= ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i - < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > ];< / div >
< div class = "line" > < a id = "l00034" name = "l00034" > < / a > < span class = "lineno" > 34< / span > }< / div >
< / div >
< div class = "line" > < a id = "l00035" name = "l00035" > < / a > < span class = "lineno" > 35< / span > < / div >
< div class = "foldopen" id = "foldopen00036" data-start = "{" data-end = "}" >
< div class = "line" > < a id = "l00036" name = "l00036" > < / a > < span class = "lineno" > < a class = "line" href = "lfg_8c.html#a306c5ff9a0006e222eef0a9a79f81d77" > 36< / a > < / span > < span class = "keyword" > static< / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "lfg_8c.html#a306c5ff9a0006e222eef0a9a79f81d77" > lfg_backward< / a > (< span class = "keyword" > struct< / span > < a class = "code hl_struct" href = "structngc__lfg__ctx.html" > ngc_lfg_ctx< / a > *ctx, < span class = "keywordtype" > size_t< / span > start_word, < span class = "keywordtype" > size_t< / span > end_word)< / div >
< div class = "line" > < a id = "l00037" name = "l00037" > < / a > < span class = "lineno" > 37< / span > {< / div >
< div class = "line" > < a id = "l00038" name = "l00038" > < / a > < span class = "lineno" > 38< / span > < span class = "keywordtype" > size_t< / span > loop_end = < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > > start_word ? < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > : start_word;< / div >
< div class = "line" > < a id = "l00039" name = "l00039" > < / a > < span class = "lineno" > 39< / span > < span class = "keywordtype" > size_t< / span > upper = end_word < < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ? end_word : < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ;< / div >
< div class = "line" > < a id = "l00040" name = "l00040" > < / a > < span class = "lineno" > 40< / span > < / div >
< div class = "line" > < a id = "l00041" name = "l00041" > < / a > < span class = "lineno" > 41< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = upper; i > loop_end; --i) ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i - 1] ^= ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i - 1 - < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > ];< / div >
< div class = "line" > < a id = "l00042" name = "l00042" > < / a > < span class = "lineno" > 42< / span > < / div >
< div class = "line" > < a id = "l00043" name = "l00043" > < / a > < span class = "lineno" > 43< / span > < span class = "keywordtype" > size_t< / span > upper2 = end_word < < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > ? end_word : < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > ;< / div >
< div class = "line" > < a id = "l00044" name = "l00044" > < / a > < span class = "lineno" > 44< / span > < / div >
< div class = "line" > < a id = "l00045" name = "l00045" > < / a > < span class = "lineno" > 45< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = upper2; i > start_word; --i) ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i - 1] ^= ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i - 1 + < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > - < a class = "code hl_define" href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > ];< / div >
< div class = "line" > < a id = "l00046" name = "l00046" > < / a > < span class = "lineno" > 46< / span > }< / div >
< / div >
< div class = "line" > < a id = "l00047" name = "l00047" > < / a > < span class = "lineno" > 47< / span > < / div >
< div class = "foldopen" id = "foldopen00048" data-start = "{" data-end = "}" >
< div class = "line" > < a id = "l00048" name = "l00048" > < / a > < span class = "lineno" > < a class = "line" href = "lfg_8c.html#a46e2707c175bb96188106c86fdcb1953" > 48< / a > < / span > < span class = "keyword" > static< / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "lfg_8c.html#a46e2707c175bb96188106c86fdcb1953" > lfg_initialize< / a > (< span class = "keyword" > struct< / span > < a class = "code hl_struct" href = "structngc__lfg__ctx.html" > ngc_lfg_ctx< / a > *ctx, < span class = "keywordtype" > bool< / span > check_existing)< / div >
< div class = "line" > < a id = "l00049" name = "l00049" > < / a > < span class = "lineno" > 49< / span > {< / div >
< div class = "line" > < a id = "l00050" name = "l00050" > < / a > < span class = "lineno" > 50< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = < a class = "code hl_define" href = "lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed" > NGC_LFG_SEED_SIZE< / a > ; i < < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ; i++)< / div >
< div class = "line" > < a id = "l00051" name = "l00051" > < / a > < span class = "lineno" > 51< / span > {< / div >
< div class = "line" > < a id = "l00052" name = "l00052" > < / a > < span class = "lineno" > 52< / span > uint32_t calculated = (ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i - 17] < < 23) ^ (ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i - 16] > > 9) ^ ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i - 1];< / div >
< div class = "line" > < a id = "l00053" name = "l00053" > < / a > < span class = "lineno" > 53< / span > < / div >
< div class = "line" > < a id = "l00054" name = "l00054" > < / a > < span class = "lineno" > 54< / span > < span class = "keywordflow" > if< / span > (check_existing)< / div >
< div class = "line" > < a id = "l00055" name = "l00055" > < / a > < span class = "lineno" > 55< / span > {< / div >
< div class = "line" > < a id = "l00056" name = "l00056" > < / a > < span class = "lineno" > 56< / span > uint32_t actual = (ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] & 0xFF00FFFF) | (ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] < < 2 & 0x00FC0000);< / div >
< div class = "line" > < a id = "l00057" name = "l00057" > < / a > < span class = "lineno" > 57< / span > < / div >
< div class = "line" > < a id = "l00058" name = "l00058" > < / a > < span class = "lineno" > 58< / span > < span class = "keywordflow" > if< / span > ((calculated & 0xFFFCFFFF) != actual) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00059" name = "l00059" > < / a > < span class = "lineno" > 59< / span > }< / div >
< div class = "line" > < a id = "l00060" name = "l00060" > < / a > < span class = "lineno" > 60< / span > < / div >
< div class = "line" > < a id = "l00061" name = "l00061" > < / a > < span class = "lineno" > 61< / span > ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] = calculated;< / div >
< div class = "line" > < a id = "l00062" name = "l00062" > < / a > < span class = "lineno" > 62< / span > }< / div >
< div class = "line" > < a id = "l00063" name = "l00063" > < / a > < span class = "lineno" > 63< / span > < / div >
< div class = "line" > < a id = "l00064" name = "l00064" > < / a > < span class = "lineno" > 64< / span > < span class = "comment" > /* Apply the shift-by-18-instead-of-16 quirk + byteswap */< / span > < / div >
< div class = "line" > < a id = "l00065" name = "l00065" > < / a > < span class = "lineno" > 65< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ; i++)< / div >
< div class = "line" > < a id = "l00066" name = "l00066" > < / a > < span class = "lineno" > 66< / span > ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] = < a class = "code hl_function" href = "lfg_8c.html#a2f32611fcb5d9160c4bd4b6f2f1c2fa9" > swap32< / a > ((ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] & 0xFF00FFFF) | ((ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] > > 2) & 0x00FF0000));< / div >
< div class = "line" > < a id = "l00067" name = "l00067" > < / a > < span class = "lineno" > 67< / span > < / div >
< div class = "line" > < a id = "l00068" name = "l00068" > < / a > < span class = "lineno" > 68< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < 4; i++) < a class = "code hl_function" href = "lfg_8c.html#a672ca5afd8a74c736fed44e0a89df900" > lfg_forward< / a > (ctx);< / div >
< div class = "line" > < a id = "l00069" name = "l00069" > < / a > < span class = "lineno" > 69< / span > < / div >
< div class = "line" > < a id = "l00070" name = "l00070" > < / a > < span class = "lineno" > 70< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00071" name = "l00071" > < / a > < span class = "lineno" > 71< / span > }< / div >
< / div >
< div class = "line" > < a id = "l00072" name = "l00072" > < / a > < span class = "lineno" > 72< / span > < / div >
< div class = "foldopen" id = "foldopen00073" data-start = "{" data-end = "}" >
< div class = "line" > < a id = "l00073" name = "l00073" > < / a > < span class = "lineno" > < a class = "line" href = "lfg_8c.html#abc583da3bb66cab3eafc3496bc46e193" > 73< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "lfg_8c.html#abc583da3bb66cab3eafc3496bc46e193" > ngc_lfg_set_seed< / a > (< span class = "keyword" > struct< / span > < a class = "code hl_struct" href = "structngc__lfg__ctx.html" > ngc_lfg_ctx< / a > *ctx, < span class = "keyword" > const< / span > uint32_t seed[< a class = "code hl_define" href = "lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed" > NGC_LFG_SEED_SIZE< / a > ])< / div >
< div class = "line" > < a id = "l00074" name = "l00074" > < / a > < span class = "lineno" > 74< / span > {< / div >
< div class = "line" > < a id = "l00075" name = "l00075" > < / a > < span class = "lineno" > 75< / span > ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > = 0;< / div >
< div class = "line" > < a id = "l00076" name = "l00076" > < / a > < span class = "lineno" > 76< / span > < / div >
< div class = "line" > < a id = "l00077" name = "l00077" > < / a > < span class = "lineno" > 77< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < < a class = "code hl_define" href = "lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed" > NGC_LFG_SEED_SIZE< / a > ; i++) ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] = < a class = "code hl_function" href = "lfg_8c.html#a2f32611fcb5d9160c4bd4b6f2f1c2fa9" > swap32< / a > (seed[i]);< / div >
< div class = "line" > < a id = "l00078" name = "l00078" > < / a > < span class = "lineno" > 78< / span > < / div >
< div class = "line" > < a id = "l00079" name = "l00079" > < / a > < span class = "lineno" > 79< / span > < a class = "code hl_function" href = "lfg_8c.html#a46e2707c175bb96188106c86fdcb1953" > lfg_initialize< / a > (ctx, < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a id = "l00080" name = "l00080" > < / a > < span class = "lineno" > 80< / span > }< / div >
< / div >
< div class = "line" > < a id = "l00081" name = "l00081" > < / a > < span class = "lineno" > 81< / span > < / div >
< div class = "foldopen" id = "foldopen00082" data-start = "{" data-end = "}" >
< div class = "line" > < a id = "l00082" name = "l00082" > < / a > < span class = "lineno" > < a class = "line" href = "lfg_8c.html#a25e6df5ee051a324d943185f193d3418" > 82< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "lfg_8c.html#a25e6df5ee051a324d943185f193d3418" > ngc_lfg_get_bytes< / a > (< span class = "keyword" > struct< / span > < a class = "code hl_struct" href = "structngc__lfg__ctx.html" > ngc_lfg_ctx< / a > *ctx, uint8_t *out, < span class = "keywordtype" > size_t< / span > count)< / div >
< div class = "line" > < a id = "l00083" name = "l00083" > < / a > < span class = "lineno" > 83< / span > {< / div >
< div class = "line" > < a id = "l00084" name = "l00084" > < / a > < span class = "lineno" > 84< / span > < span class = "keywordflow" > while< / span > (count > 0)< / div >
< div class = "line" > < a id = "l00085" name = "l00085" > < / a > < span class = "lineno" > 85< / span > {< / div >
< div class = "line" > < a id = "l00086" name = "l00086" > < / a > < span class = "lineno" > 86< / span > < span class = "keywordtype" > size_t< / span > avail = < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > * < span class = "keyword" > sizeof< / span > (uint32_t) - ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > ;< / div >
< div class = "line" > < a id = "l00087" name = "l00087" > < / a > < span class = "lineno" > 87< / span > < span class = "keywordtype" > size_t< / span > chunk = count < avail ? count : avail;< / div >
< div class = "line" > < a id = "l00088" name = "l00088" > < / a > < span class = "lineno" > 88< / span > < / div >
< div class = "line" > < a id = "l00089" name = "l00089" > < / a > < span class = "lineno" > 89< / span > memcpy(out, (uint8_t *)ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > + ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > , chunk);< / div >
< div class = "line" > < a id = "l00090" name = "l00090" > < / a > < span class = "lineno" > 90< / span > < / div >
< div class = "line" > < a id = "l00091" name = "l00091" > < / a > < span class = "lineno" > 91< / span > ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > += chunk;< / div >
< div class = "line" > < a id = "l00092" name = "l00092" > < / a > < span class = "lineno" > 92< / span > count -= chunk;< / div >
< div class = "line" > < a id = "l00093" name = "l00093" > < / a > < span class = "lineno" > 93< / span > out += chunk;< / div >
< div class = "line" > < a id = "l00094" name = "l00094" > < / a > < span class = "lineno" > 94< / span > < / div >
< div class = "line" > < a id = "l00095" name = "l00095" > < / a > < span class = "lineno" > 95< / span > < span class = "keywordflow" > if< / span > (ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > == < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > * < span class = "keyword" > sizeof< / span > (uint32_t))< / div >
< div class = "line" > < a id = "l00096" name = "l00096" > < / a > < span class = "lineno" > 96< / span > {< / div >
< div class = "line" > < a id = "l00097" name = "l00097" > < / a > < span class = "lineno" > 97< / span > < a class = "code hl_function" href = "lfg_8c.html#a672ca5afd8a74c736fed44e0a89df900" > lfg_forward< / a > (ctx);< / div >
< div class = "line" > < a id = "l00098" name = "l00098" > < / a > < span class = "lineno" > 98< / span > ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > = 0;< / div >
< div class = "line" > < a id = "l00099" name = "l00099" > < / a > < span class = "lineno" > 99< / span > }< / div >
< div class = "line" > < a id = "l00100" name = "l00100" > < / a > < span class = "lineno" > 100< / span > }< / div >
< div class = "line" > < a id = "l00101" name = "l00101" > < / a > < span class = "lineno" > 101< / span > }< / div >
< / div >
< div class = "line" > < a id = "l00102" name = "l00102" > < / a > < span class = "lineno" > 102< / span > < / div >
< div class = "foldopen" id = "foldopen00103" data-start = "{" data-end = "}" >
< div class = "line" > < a id = "l00103" name = "l00103" > < / a > < span class = "lineno" > < a class = "line" href = "lfg_8c.html#a7a8fe75a120f047f2a2fad61d664d9da" > 103< / a > < / span > < span class = "keyword" > static< / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "lfg_8c.html#a7a8fe75a120f047f2a2fad61d664d9da" > lfg_reinitialize< / a > (< span class = "keyword" > struct< / span > < a class = "code hl_struct" href = "structngc__lfg__ctx.html" > ngc_lfg_ctx< / a > *ctx, uint32_t seed_out[< a class = "code hl_define" href = "lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed" > NGC_LFG_SEED_SIZE< / a > ])< / div >
< div class = "line" > < a id = "l00104" name = "l00104" > < / a > < span class = "lineno" > 104< / span > {< / div >
< div class = "line" > < a id = "l00105" name = "l00105" > < / a > < span class = "lineno" > 105< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < 4; i++) < a class = "code hl_function" href = "lfg_8c.html#a306c5ff9a0006e222eef0a9a79f81d77" > lfg_backward< / a > (ctx, 0, < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > );< / div >
< div class = "line" > < a id = "l00106" name = "l00106" > < / a > < span class = "lineno" > 106< / span > < / div >
< div class = "line" > < a id = "l00107" name = "l00107" > < / a > < span class = "lineno" > 107< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ; i++) ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] = < a class = "code hl_function" href = "lfg_8c.html#a2f32611fcb5d9160c4bd4b6f2f1c2fa9" > swap32< / a > (ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i]);< / div >
< div class = "line" > < a id = "l00108" name = "l00108" > < / a > < span class = "lineno" > 108< / span > < / div >
< div class = "line" > < a id = "l00109" name = "l00109" > < / a > < span class = "lineno" > 109< / span > < span class = "comment" > /* Reconstruct bits lost by the shift-by-18-instead-of-16 quirk */< / span > < / div >
< div class = "line" > < a id = "l00110" name = "l00110" > < / a > < span class = "lineno" > 110< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < < a class = "code hl_define" href = "lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed" > NGC_LFG_SEED_SIZE< / a > ; i++)< / div >
< div class = "line" > < a id = "l00111" name = "l00111" > < / a > < span class = "lineno" > 111< / span > {< / div >
< div class = "line" > < a id = "l00112" name = "l00112" > < / a > < span class = "lineno" > 112< / span > ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] = (ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] & 0xFF00FFFF) | (ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] < < 2 & 0x00FC0000) |< / div >
< div class = "line" > < a id = "l00113" name = "l00113" > < / a > < span class = "lineno" > 113< / span > ((ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i + 16] ^ ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i + 15]) < < 9 & 0x00030000);< / div >
< div class = "line" > < a id = "l00114" name = "l00114" > < / a > < span class = "lineno" > 114< / span > }< / div >
< div class = "line" > < a id = "l00115" name = "l00115" > < / a > < span class = "lineno" > 115< / span > < / div >
< div class = "line" > < a id = "l00116" name = "l00116" > < / a > < span class = "lineno" > 116< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < < a class = "code hl_define" href = "lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed" > NGC_LFG_SEED_SIZE< / a > ; i++) seed_out[i] = < a class = "code hl_function" href = "lfg_8c.html#a2f32611fcb5d9160c4bd4b6f2f1c2fa9" > swap32< / a > (ctx-> < a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i]);< / div >
< div class = "line" > < a id = "l00117" name = "l00117" > < / a > < span class = "lineno" > 117< / span > < / div >
< div class = "line" > < a id = "l00118" name = "l00118" > < / a > < span class = "lineno" > 118< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "lfg_8c.html#a46e2707c175bb96188106c86fdcb1953" > lfg_initialize< / a > (ctx, < span class = "keyword" > true< / span > );< / div >
< div class = "line" > < a id = "l00119" name = "l00119" > < / a > < span class = "lineno" > 119< / span > }< / div >
< / div >
< div class = "line" > < a id = "l00120" name = "l00120" > < / a > < span class = "lineno" > 120< / span > < / div >
< div class = "foldopen" id = "foldopen00121" data-start = "{" data-end = "}" >
< div class = "line" > < a id = "l00121" name = "l00121" > < / a > < span class = "lineno" > < a class = "line" href = "lfg_8c.html#aef1434f019902caf30f1d4fe577267ba" > 121< / a > < / span > < span class = "keywordtype" > size_t< / span > < a class = "code hl_function" href = "lfg_8c.html#aef1434f019902caf30f1d4fe577267ba" > ngc_lfg_get_seed< / a > (< span class = "keyword" > const< / span > uint8_t *data, < span class = "keywordtype" > size_t< / span > size, < span class = "keywordtype" > size_t< / span > data_offset, uint32_t seed_out[< a class = "code hl_define" href = "lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed" > NGC_LFG_SEED_SIZE< / a > ])< / div >
< div class = "line" > < a id = "l00122" name = "l00122" > < / a > < span class = "lineno" > 122< / span > {< / div >
< div class = "line" > < a id = "l00123" name = "l00123" > < / a > < span class = "lineno" > 123< / span > < span class = "comment" > /* Alignment: data - data_offset must be 4-byte aligned */< / span > < / div >
< div class = "line" > < a id = "l00124" name = "l00124" > < / a > < span class = "lineno" > 124< / span > < span class = "keywordflow" > if< / span > (((uintptr_t)data - data_offset) % < span class = "keyword" > sizeof< / span > (uint32_t) != 0) < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a id = "l00125" name = "l00125" > < / a > < span class = "lineno" > 125< / span > < / div >
< div class = "line" > < a id = "l00126" name = "l00126" > < / a > < span class = "lineno" > 126< / span > < span class = "comment" > /* Work on whole u32 words */< / span > < / div >
< div class = "line" > < a id = "l00127" name = "l00127" > < / a > < span class = "lineno" > 127< / span > < span class = "keywordtype" > size_t< / span > bytes_to_skip = ((data_offset + 3) & ~(size_t)3) - data_offset;< / div >
< div class = "line" > < a id = "l00128" name = "l00128" > < / a > < span class = "lineno" > 128< / span > < / div >
< div class = "line" > < a id = "l00129" name = "l00129" > < / a > < span class = "lineno" > 129< / span > < span class = "keywordflow" > if< / span > (bytes_to_skip > size) < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a id = "l00130" name = "l00130" > < / a > < span class = "lineno" > 130< / span > < / div >
< div class = "line" > < a id = "l00131" name = "l00131" > < / a > < span class = "lineno" > 131< / span > < span class = "keyword" > const< / span > uint32_t *u32_data = (< span class = "keyword" > const< / span > uint32_t *)(data + bytes_to_skip);< / div >
< div class = "line" > < a id = "l00132" name = "l00132" > < / a > < span class = "lineno" > 132< / span > < span class = "keywordtype" > size_t< / span > u32_size = (size - bytes_to_skip) / < span class = "keyword" > sizeof< / span > (uint32_t);< / div >
< div class = "line" > < a id = "l00133" name = "l00133" > < / a > < span class = "lineno" > 133< / span > < span class = "keywordtype" > size_t< / span > u32_data_offset = (data_offset + bytes_to_skip) / < span class = "keyword" > sizeof< / span > (uint32_t);< / div >
< div class = "line" > < a id = "l00134" name = "l00134" > < / a > < span class = "lineno" > 134< / span > < / div >
< div class = "line" > < a id = "l00135" name = "l00135" > < / a > < span class = "lineno" > 135< / span > < span class = "keywordflow" > if< / span > (u32_size < < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ) < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a id = "l00136" name = "l00136" > < / a > < span class = "lineno" > 136< / span > < / div >
< div class = "line" > < a id = "l00137" name = "l00137" > < / a > < span class = "lineno" > 137< / span > < span class = "comment" > /* Quick sanity check: the top bits have a specific pattern from the shift quirk */< / span > < / div >
< div class = "line" > < a id = "l00138" name = "l00138" > < / a > < span class = "lineno" > 138< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ; i++)< / div >
< div class = "line" > < a id = "l00139" name = "l00139" > < / a > < span class = "lineno" > 139< / span > {< / div >
< div class = "line" > < a id = "l00140" name = "l00140" > < / a > < span class = "lineno" > 140< / span > uint32_t x = < a class = "code hl_function" href = "lfg_8c.html#a2f32611fcb5d9160c4bd4b6f2f1c2fa9" > swap32< / a > (u32_data[i]);< / div >
< div class = "line" > < a id = "l00141" name = "l00141" > < / a > < span class = "lineno" > 141< / span > < / div >
< div class = "line" > < a id = "l00142" name = "l00142" > < / a > < span class = "lineno" > 142< / span > < span class = "keywordflow" > if< / span > ((x & 0x00C00000) != (x > > 2 & 0x00C00000)) < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a id = "l00143" name = "l00143" > < / a > < span class = "lineno" > 143< / span > }< / div >
< div class = "line" > < a id = "l00144" name = "l00144" > < / a > < span class = "lineno" > 144< / span > < / div >
< div class = "line" > < a id = "l00145" name = "l00145" > < / a > < span class = "lineno" > 145< / span > < span class = "keyword" > struct < / span > < a class = "code hl_struct" href = "structngc__lfg__ctx.html" > ngc_lfg_ctx< / a > lfg;< / div >
< div class = "line" > < a id = "l00146" name = "l00146" > < / a > < span class = "lineno" > 146< / span > < span class = "keywordtype" > size_t< / span > data_offset_mod_k = u32_data_offset % < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ;< / div >
< div class = "line" > < a id = "l00147" name = "l00147" > < / a > < span class = "lineno" > 147< / span > < span class = "keywordtype" > size_t< / span > data_offset_div_k = u32_data_offset / < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ;< / div >
< div class = "line" > < a id = "l00148" name = "l00148" > < / a > < span class = "lineno" > 148< / span > < / div >
< div class = "line" > < a id = "l00149" name = "l00149" > < / a > < span class = "lineno" > 149< / span > < span class = "comment" > /* Place the data into the buffer at the correct position.< / span > < / div >
< div class = "line" > < a id = "l00150" name = "l00150" > < / a > < span class = "lineno" > 150< / span > < span class = "comment" > * Copy raw native-endian u32 values — NO byte-swapping here.< / span > < / div >
< div class = "line" > < a id = "l00151" name = "l00151" > < / a > < span class = "lineno" > 151< / span > < span class = "comment" > * The swap happens later inside lfg_reinitialize/lfg_initialize. */< / span > < / div >
< div class = "line" > < a id = "l00152" name = "l00152" > < / a > < span class = "lineno" > 152< / span > < span class = "keywordtype" > size_t< / span > first_part = < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > - data_offset_mod_k;< / div >
< div class = "line" > < a id = "l00153" name = "l00153" > < / a > < span class = "lineno" > 153< / span > < / div >
< div class = "line" > < a id = "l00154" name = "l00154" > < / a > < span class = "lineno" > 154< / span > < span class = "keywordflow" > if< / span > (first_part > < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ) first_part = < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ;< / div >
< div class = "line" > < a id = "l00155" name = "l00155" > < / a > < span class = "lineno" > 155< / span > < / div >
< div class = "line" > < a id = "l00156" name = "l00156" > < / a > < span class = "lineno" > 156< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < first_part & & i < < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > ; i++) lfg.< a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [data_offset_mod_k + i] = u32_data[i];< / div >
< div class = "line" > < a id = "l00157" name = "l00157" > < / a > < span class = "lineno" > 157< / span > < / div >
< div class = "line" > < a id = "l00158" name = "l00158" > < / a > < span class = "lineno" > 158< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < data_offset_mod_k; i++) lfg.< a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > [i] = u32_data[first_part + i];< / div >
< div class = "line" > < a id = "l00159" name = "l00159" > < / a > < span class = "lineno" > 159< / span > < / div >
< div class = "line" > < a id = "l00160" name = "l00160" > < / a > < span class = "lineno" > 160< / span > < a class = "code hl_function" href = "lfg_8c.html#a306c5ff9a0006e222eef0a9a79f81d77" > lfg_backward< / a > (& lfg, 0, data_offset_mod_k);< / div >
< div class = "line" > < a id = "l00161" name = "l00161" > < / a > < span class = "lineno" > 161< / span > < / div >
< div class = "line" > < a id = "l00162" name = "l00162" > < / a > < span class = "lineno" > 162< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < data_offset_div_k; i++) < a class = "code hl_function" href = "lfg_8c.html#a306c5ff9a0006e222eef0a9a79f81d77" > lfg_backward< / a > (& lfg, 0, < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > );< / div >
< div class = "line" > < a id = "l00163" name = "l00163" > < / a > < span class = "lineno" > 163< / span > < / div >
< div class = "line" > < a id = "l00164" name = "l00164" > < / a > < span class = "lineno" > 164< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "lfg_8c.html#a7a8fe75a120f047f2a2fad61d664d9da" > lfg_reinitialize< / a > (& lfg, seed_out)) < span class = "keywordflow" > return< / span > 0;< / div >
< div class = "line" > < a id = "l00165" name = "l00165" > < / a > < span class = "lineno" > 165< / span > < / div >
< div class = "line" > < a id = "l00166" name = "l00166" > < / a > < span class = "lineno" > 166< / span > lfg.< a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > = data_offset % (< a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > * < span class = "keyword" > sizeof< / span > (uint32_t));< / div >
< div class = "line" > < a id = "l00167" name = "l00167" > < / a > < span class = "lineno" > 167< / span > < / div >
< div class = "line" > < a id = "l00168" name = "l00168" > < / a > < span class = "lineno" > 168< / span > < span class = "comment" > /* Advance the LFG forward to match the data_offset position. */< / span > < / div >
< div class = "line" > < a id = "l00169" name = "l00169" > < / a > < span class = "lineno" > 169< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > size_t< / span > i = 0; i < data_offset_div_k; i++) < a class = "code hl_function" href = "lfg_8c.html#a672ca5afd8a74c736fed44e0a89df900" > lfg_forward< / a > (& lfg);< / div >
< div class = "line" > < a id = "l00170" name = "l00170" > < / a > < span class = "lineno" > 170< / span > < / div >
< div class = "line" > < a id = "l00171" name = "l00171" > < / a > < span class = "lineno" > 171< / span > < span class = "comment" > /* Count how many bytes from data match the LFG output */< / span > < / div >
< div class = "line" > < a id = "l00172" name = "l00172" > < / a > < span class = "lineno" > 172< / span > < span class = "keywordtype" > size_t< / span > result = 0;< / div >
< div class = "line" > < a id = "l00173" name = "l00173" > < / a > < span class = "lineno" > 173< / span > < span class = "keyword" > const< / span > uint8_t *p = data;< / div >
< div class = "line" > < a id = "l00174" name = "l00174" > < / a > < span class = "lineno" > 174< / span > < span class = "keyword" > const< / span > uint8_t *end = data + size;< / div >
< div class = "line" > < a id = "l00175" name = "l00175" > < / a > < span class = "lineno" > 175< / span > < / div >
< div class = "line" > < a id = "l00176" name = "l00176" > < / a > < span class = "lineno" > 176< / span > < span class = "keywordflow" > while< / span > (p < end)< / div >
< div class = "line" > < a id = "l00177" name = "l00177" > < / a > < span class = "lineno" > 177< / span > {< / div >
< div class = "line" > < a id = "l00178" name = "l00178" > < / a > < span class = "lineno" > 178< / span > uint8_t expected = ((uint8_t *)lfg.< a class = "code hl_variable" href = "structngc__lfg__ctx.html#a9b5c7dbc3b197b77bef259cd8bbb408a" > buffer< / a > )[lfg.< a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > ];< / div >
< div class = "line" > < a id = "l00179" name = "l00179" > < / a > < span class = "lineno" > 179< / span > < / div >
< div class = "line" > < a id = "l00180" name = "l00180" > < / a > < span class = "lineno" > 180< / span > < span class = "keywordflow" > if< / span > (*p != expected) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00181" name = "l00181" > < / a > < span class = "lineno" > 181< / span > < / div >
< div class = "line" > < a id = "l00182" name = "l00182" > < / a > < span class = "lineno" > 182< / span > result++;< / div >
< div class = "line" > < a id = "l00183" name = "l00183" > < / a > < span class = "lineno" > 183< / span > p++;< / div >
< div class = "line" > < a id = "l00184" name = "l00184" > < / a > < span class = "lineno" > 184< / span > lfg.< a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > ++;< / div >
< div class = "line" > < a id = "l00185" name = "l00185" > < / a > < span class = "lineno" > 185< / span > < / div >
< div class = "line" > < a id = "l00186" name = "l00186" > < / a > < span class = "lineno" > 186< / span > < span class = "keywordflow" > if< / span > (lfg.< a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > == < a class = "code hl_define" href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > * < span class = "keyword" > sizeof< / span > (uint32_t))< / div >
< div class = "line" > < a id = "l00187" name = "l00187" > < / a > < span class = "lineno" > 187< / span > {< / div >
< div class = "line" > < a id = "l00188" name = "l00188" > < / a > < span class = "lineno" > 188< / span > < a class = "code hl_function" href = "lfg_8c.html#a672ca5afd8a74c736fed44e0a89df900" > lfg_forward< / a > (& lfg);< / div >
< div class = "line" > < a id = "l00189" name = "l00189" > < / a > < span class = "lineno" > 189< / span > lfg.< a class = "code hl_variable" href = "structngc__lfg__ctx.html#a84958bcdb9e96a4231aa4f43d5415eea" > position_bytes< / a > = 0;< / div >
< div class = "line" > < a id = "l00190" name = "l00190" > < / a > < span class = "lineno" > 190< / span > }< / div >
< div class = "line" > < a id = "l00191" name = "l00191" > < / a > < span class = "lineno" > 191< / span > }< / div >
< div class = "line" > < a id = "l00192" name = "l00192" > < / a > < span class = "lineno" > 192< / span > < / div >
< div class = "line" > < a id = "l00193" name = "l00193" > < / a > < span class = "lineno" > 193< / span > < span class = "keywordflow" > return< / span > result;< / div >
< div class = "line" > < a id = "l00194" name = "l00194" > < / a > < span class = "lineno" > 194< / span > }< / div >
< / div >
< div class = "ttc" id = "alfg_8c_html_a25e6df5ee051a324d943185f193d3418" > < div class = "ttname" > < a href = "lfg_8c.html#a25e6df5ee051a324d943185f193d3418" > ngc_lfg_get_bytes< / a > < / div > < div class = "ttdeci" > void ngc_lfg_get_bytes(struct ngc_lfg_ctx *ctx, uint8_t *out, size_t count)< / div > < div class = "ttdoc" > Generate count bytes of junk data into out.< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "#l00082" > lfg.c:82< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8c_html_a2f32611fcb5d9160c4bd4b6f2f1c2fa9" > < div class = "ttname" > < a href = "lfg_8c.html#a2f32611fcb5d9160c4bd4b6f2f1c2fa9" > swap32< / a > < / div > < div class = "ttdeci" > static uint32_t swap32(uint32_t x)< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "#l00026" > lfg.c:26< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8c_html_a306c5ff9a0006e222eef0a9a79f81d77" > < div class = "ttname" > < a href = "lfg_8c.html#a306c5ff9a0006e222eef0a9a79f81d77" > lfg_backward< / a > < / div > < div class = "ttdeci" > static void lfg_backward(struct ngc_lfg_ctx *ctx, size_t start_word, size_t end_word)< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "#l00036" > lfg.c:36< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8c_html_a46e2707c175bb96188106c86fdcb1953" > < div class = "ttname" > < a href = "lfg_8c.html#a46e2707c175bb96188106c86fdcb1953" > lfg_initialize< / a > < / div > < div class = "ttdeci" > static bool lfg_initialize(struct ngc_lfg_ctx *ctx, bool check_existing)< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "#l00048" > lfg.c:48< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8c_html_a672ca5afd8a74c736fed44e0a89df900" > < div class = "ttname" > < a href = "lfg_8c.html#a672ca5afd8a74c736fed44e0a89df900" > lfg_forward< / a > < / div > < div class = "ttdeci" > static void lfg_forward(struct ngc_lfg_ctx *ctx)< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "#l00029" > lfg.c:29< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8c_html_a7a8fe75a120f047f2a2fad61d664d9da" > < div class = "ttname" > < a href = "lfg_8c.html#a7a8fe75a120f047f2a2fad61d664d9da" > lfg_reinitialize< / a > < / div > < div class = "ttdeci" > static bool lfg_reinitialize(struct ngc_lfg_ctx *ctx, uint32_t seed_out[17])< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "#l00103" > lfg.c:103< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8c_html_abc583da3bb66cab3eafc3496bc46e193" > < div class = "ttname" > < a href = "lfg_8c.html#abc583da3bb66cab3eafc3496bc46e193" > ngc_lfg_set_seed< / a > < / div > < div class = "ttdeci" > void ngc_lfg_set_seed(struct ngc_lfg_ctx *ctx, const uint32_t seed[17])< / div > < div class = "ttdoc" > Initialize the LFG from a 17-word big-endian seed.< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "#l00073" > lfg.c:73< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8c_html_aef1434f019902caf30f1d4fe577267ba" > < div class = "ttname" > < a href = "lfg_8c.html#aef1434f019902caf30f1d4fe577267ba" > ngc_lfg_get_seed< / a > < / div > < div class = "ttdeci" > size_t ngc_lfg_get_seed(const uint8_t *data, size_t size, size_t data_offset, uint32_t seed_out[17])< / div > < div class = "ttdoc" > Try to extract the LFG seed from a chunk of data.< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "#l00121" > lfg.c:121< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8h_html" > < div class = "ttname" > < a href = "lfg_8h.html" > lfg.h< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8h_html_a16edb4e9c0a519cb423979b38d8f132a" > < div class = "ttname" > < a href = "lfg_8h.html#a16edb4e9c0a519cb423979b38d8f132a" > NGC_LFG_K< / a > < / div > < div class = "ttdeci" > #define NGC_LFG_K< / div > < div class = "ttdoc" > LFG buffer size (number of uint32 words in state).< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "lfg_8h_source.html#l00034" > lfg.h:34< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8h_html_a2c4db3d8d295f706dcacc8a4d039beed" > < div class = "ttname" > < a href = "lfg_8h.html#a2c4db3d8d295f706dcacc8a4d039beed" > NGC_LFG_SEED_SIZE< / a > < / div > < div class = "ttdeci" > #define NGC_LFG_SEED_SIZE< / div > < div class = "ttdoc" > Number of uint32 words needed to seed the LFG.< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "lfg_8h_source.html#l00036" > lfg.h:36< / a > < / div > < / div >
< div class = "ttc" id = "alfg_8h_html_a865dc66e4ab8ae46527b88c2c119807a" > < div class = "ttname" > < a href = "lfg_8h.html#a865dc66e4ab8ae46527b88c2c119807a" > NGC_LFG_J< / a > < / div > < div class = "ttdeci" > #define NGC_LFG_J< / div > < div class = "ttdoc" > LFG second tap.< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "lfg_8h_source.html#l00035" > lfg.h:35< / a > < / div > < / div >
< div class = "ttc" id = "astructngc__lfg__ctx_html" > < div class = "ttname" > < a href = "structngc__lfg__ctx.html" > ngc_lfg_ctx< / a > < / div > < div class = "ttdoc" > LFG context holding the 521-word circular buffer and byte position.< / div > < div class = "ttdef" > < b > Definition< / b > < a href = "lfg_8h_source.html#l00041" > lfg.h:42< / a > < / div > < / div >
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