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minor FP tweaks

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This commit is contained in:
Josh Coalson
2001-06-05 02:03:11 +00:00
parent b6b25b677a
commit f966ef70fc
2 changed files with 18 additions and 18 deletions
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30
src/libFLAC/fixed.c
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@@ -65,11 +65,11 @@ unsigned FLAC__fixed_compute_best_predictor(const int32 data[], unsigned data_le
else else
order = 4; order = 4;
residual_bits_per_sample[0] = (real)((data_len > 0 && total_error_0 > 0) ? log(M_LN2 * (real)total_error_0 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[0] = (real)((data_len > 0 && total_error_0 > 0) ? log(M_LN2 * (double)total_error_0 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[1] = (real)((data_len > 0 && total_error_1 > 0) ? log(M_LN2 * (real)total_error_1 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[1] = (real)((data_len > 0 && total_error_1 > 0) ? log(M_LN2 * (double)total_error_1 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[2] = (real)((data_len > 0 && total_error_2 > 0) ? log(M_LN2 * (real)total_error_2 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[2] = (real)((data_len > 0 && total_error_2 > 0) ? log(M_LN2 * (double)total_error_2 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[3] = (real)((data_len > 0 && total_error_3 > 0) ? log(M_LN2 * (real)total_error_3 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[3] = (real)((data_len > 0 && total_error_3 > 0) ? log(M_LN2 * (double)total_error_3 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[4] = (real)((data_len > 0 && total_error_4 > 0) ? log(M_LN2 * (real)total_error_4 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[4] = (real)((data_len > 0 && total_error_4 > 0) ? log(M_LN2 * (double)total_error_4 / (double) data_len) / M_LN2 : 0.0);
return order; return order;
} }
@@ -112,17 +112,17 @@ unsigned FLAC__fixed_compute_best_predictor_slow(const int32 data[], unsigned da
/* signal, so we use it directly to compute E(|x|) */ /* signal, so we use it directly to compute E(|x|) */
#ifdef _MSC_VER #ifdef _MSC_VER
/* with VC++ you have to spoon feed it the casting */ /* with VC++ you have to spoon feed it the casting */
residual_bits_per_sample[0] = (real)((data_len > 0 && total_error_0 > 0) ? log(M_LN2 * (real)(int64)total_error_0 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[0] = (real)((data_len > 0 && total_error_0 > 0) ? log(M_LN2 * (double)(int64)total_error_0 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[1] = (real)((data_len > 0 && total_error_1 > 0) ? log(M_LN2 * (real)(int64)total_error_1 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[1] = (real)((data_len > 0 && total_error_1 > 0) ? log(M_LN2 * (double)(int64)total_error_1 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[2] = (real)((data_len > 0 && total_error_2 > 0) ? log(M_LN2 * (real)(int64)total_error_2 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[2] = (real)((data_len > 0 && total_error_2 > 0) ? log(M_LN2 * (double)(int64)total_error_2 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[3] = (real)((data_len > 0 && total_error_3 > 0) ? log(M_LN2 * (real)(int64)total_error_3 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[3] = (real)((data_len > 0 && total_error_3 > 0) ? log(M_LN2 * (double)(int64)total_error_3 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[4] = (real)((data_len > 0 && total_error_4 > 0) ? log(M_LN2 * (real)(int64)total_error_4 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[4] = (real)((data_len > 0 && total_error_4 > 0) ? log(M_LN2 * (double)(int64)total_error_4 / (double) data_len) / M_LN2 : 0.0);
#else #else
residual_bits_per_sample[0] = (real)((data_len > 0 && total_error_0 > 0) ? log(M_LN2 * (real)total_error_0 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[0] = (real)((data_len > 0 && total_error_0 > 0) ? log(M_LN2 * (double)total_error_0 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[1] = (real)((data_len > 0 && total_error_1 > 0) ? log(M_LN2 * (real)total_error_1 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[1] = (real)((data_len > 0 && total_error_1 > 0) ? log(M_LN2 * (double)total_error_1 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[2] = (real)((data_len > 0 && total_error_2 > 0) ? log(M_LN2 * (real)total_error_2 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[2] = (real)((data_len > 0 && total_error_2 > 0) ? log(M_LN2 * (double)total_error_2 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[3] = (real)((data_len > 0 && total_error_3 > 0) ? log(M_LN2 * (real)total_error_3 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[3] = (real)((data_len > 0 && total_error_3 > 0) ? log(M_LN2 * (double)total_error_3 / (double) data_len) / M_LN2 : 0.0);
residual_bits_per_sample[4] = (real)((data_len > 0 && total_error_4 > 0) ? log(M_LN2 * (real)total_error_4 / (real) data_len) / M_LN2 : 0.0); residual_bits_per_sample[4] = (real)((data_len > 0 && total_error_4 > 0) ? log(M_LN2 * (double)total_error_4 / (double) data_len) / M_LN2 : 0.0);
#endif #endif
return order; return order;

6
src/libFLAC/lpc.c
View File

@@ -112,7 +112,7 @@ void FLAC__lpc_compute_lp_coefficients(const real autoc[], unsigned max_order, r
int FLAC__lpc_quantize_coefficients(const real lp_coeff[], unsigned order, unsigned precision, unsigned bits_per_sample, int32 qlp_coeff[], int *shift) int FLAC__lpc_quantize_coefficients(const real lp_coeff[], unsigned order, unsigned precision, unsigned bits_per_sample, int32 qlp_coeff[], int *shift)
{ {
unsigned i; unsigned i;
real d, cmax = -1e10; real d, cmax = -1e32;
FLAC__ASSERT(bits_per_sample > 0); FLAC__ASSERT(bits_per_sample > 0);
FLAC__ASSERT(bits_per_sample <= sizeof(int32)*8); FLAC__ASSERT(bits_per_sample <= sizeof(int32)*8);
@@ -262,7 +262,7 @@ real FLAC__lpc_compute_expected_bits_per_residual_sample(real lpc_error, unsigne
return 0.0; return 0.0;
} }
else if(lpc_error < 0.0) { /* error should not be negative but can happen due to inadequate float resolution */ else if(lpc_error < 0.0) { /* error should not be negative but can happen due to inadequate float resolution */
return 1e10; return 1e32;
} }
else { else {
return 0.0; return 0.0;
@@ -279,7 +279,7 @@ real FLAC__lpc_compute_expected_bits_per_residual_sample_with_error_scale(real l
return 0.0; return 0.0;
} }
else if(lpc_error < 0.0) { /* error should not be negative but can happen due to inadequate float resolution */ else if(lpc_error < 0.0) { /* error should not be negative but can happen due to inadequate float resolution */
return 1e10; return 1e32;
} }
else { else {
return 0.0; return 0.0;