Upgrade to softfloat3e.

This should solve licensing problems as well.
2024-06-09 23:08:46 +02:00
parent 4b77ef6823
commit 0f29bcddf1
271 changed files with 25882 additions and 10441 deletions
--- a/src/cpu/softfloat3e/s_roundToI32.c
+++ b/src/cpu/softfloat3e/s_roundToI32.c
@@ -0,0 +1,79 @@
+/*============================================================================
+
+This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
+Package, Release 3e, by John R. Hauser.
+
+Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2017 The Regents of the
+University of California.  All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+    this list of conditions, and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions, and the following disclaimer in the documentation
+    and/or other materials provided with the distribution.
+
+ 3. Neither the name of the University nor the names of its contributors may
+    be used to endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
+DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+=============================================================================*/
+
+#include <stdint.h>
+#include "internals.h"
+#include "specialize.h"
+#include "softfloat.h"
+
+int32_t softfloat_roundToI32(bool sign, uint64_t sig, uint8_t roundingMode, bool exact, struct softfloat_status_t *status)
+{
+    uint16_t roundIncrement, roundBits;
+    uint32_t sig32;
+    union { uint32_t ui; int32_t i; } uZ;
+    int32_t z;
+    uint64_t absSigExact = sig;
+
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+    roundIncrement = 0x800;
+    if ((roundingMode != softfloat_round_near_maxMag) && (roundingMode != softfloat_round_near_even)) {
+        roundIncrement = 0;
+        if (sign ? (roundingMode == softfloat_round_min) : (roundingMode == softfloat_round_max)) {
+            roundIncrement = 0xFFF;
+        }
+    }
+    roundBits = sig & 0xFFF;
+    sig += roundIncrement;
+    if (sig & UINT64_C(0xFFFFF00000000000)) goto invalid;
+    sig32 = sig>>12;
+    if ((roundBits == 0x800) && (roundingMode == softfloat_round_near_even)) {
+        sig32 &= ~(uint32_t) 1;
+    }
+    uZ.ui = sign ? -sig32 : sig32;
+    z = uZ.i;
+    if (z && ((z < 0) ^ sign)) goto invalid;
+    if (roundBits) {
+        if (exact) softfloat_raiseFlags(status, softfloat_flag_inexact);
+        if (((uint64_t)sig32 << 12) > absSigExact)
+            softfloat_setRoundingUp(status);
+    }
+    return z;
+    /*------------------------------------------------------------------------
+    *------------------------------------------------------------------------*/
+ invalid:
+    softfloat_raiseFlags(status, softfloat_flag_invalid);
+    return sign ? i32_fromNegOverflow : i32_fromPosOverflow;
+}