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Internals: Cleanup code duplication. No functional change intended.

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This commit is contained in:
Wilson Snyder
2026-08-21 16:51:19 -04:00
parent c9e270a9fa
commit fd319beb8a
1 changed files with 22 additions and 51 deletions
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include/verilated_probdist.cpp
+22 -51
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@@ -90,23 +90,26 @@ static double _vl_dbase_chi_square(IData& seedr, int32_t deg_of_free) VL_MT_SAFE
return x;
}
static IData _vl_round_to_int32(double r) VL_PURE {
int32_t i;
if (r >= 0) {
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
} else {
r = -r;
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
i = -i;
}
return static_cast<IData>(i);
}
IData VL_DIST_CHI_SQUARE(IData& seedr, IData udf) VL_MT_SAFE {
const int32_t df = static_cast<int32_t>(udf);
if (VL_UNLIKELY(df <= 0)) {
// Chi_square distribution must have positive degree of freedom
return 0;
}
double r = _vl_dbase_chi_square(seedr, df);
int32_t i;
if (r >= 0) {
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
} else {
r = -r; // LCOV_EXCL_LINE
i = static_cast<int32_t>(
r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding // LCOV_EXCL_LINE
i = -i; // LCOV_EXCL_LINE
}
return static_cast<IData>(i);
const double r = _vl_dbase_chi_square(seedr, df);
return _vl_round_to_int32(r);
}
IData VL_DIST_ERLANG(IData& seedr, IData uk, IData umean) VL_MT_SAFE {
@@ -120,16 +123,8 @@ IData VL_DIST_ERLANG(IData& seedr, IData uk, IData umean) VL_MT_SAFE {
for (int32_t i = 1; i <= k; ++i) x = x * _vl_dbase_uniform(seedr, 0, 1);
const double a = static_cast<double>(mean);
const double b = static_cast<double>(k);
double r = -a * log(x) / b;
int32_t i;
if (r >= 0) {
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
} else {
r = -r;
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
i = -i;
}
return static_cast<IData>(i);
const double r = -a * log(x) / b;
return _vl_round_to_int32(r);
}
IData VL_DIST_EXPONENTIAL(IData& seedr, IData umean) VL_MT_SAFE {
@@ -139,31 +134,15 @@ IData VL_DIST_EXPONENTIAL(IData& seedr, IData umean) VL_MT_SAFE {
return 0;
}
int32_t i;
double r = _vl_dbase_exponential(seedr, mean);
if (r >= 0) {
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
} else {
r = -r; // LCOV_EXCL_LINE
i = static_cast<int32_t>(
r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding // LCOV_EXCL_LINE
i = -i; // LCOV_EXCL_LINE
}
return static_cast<IData>(i);
const double r = _vl_dbase_exponential(seedr, mean);
return _vl_round_to_int32(r);
}
IData VL_DIST_NORMAL(IData& seedr, IData umean, IData usd) VL_MT_SAFE {
const int32_t mean = static_cast<int32_t>(umean);
const int32_t sd = static_cast<int32_t>(usd);
double r = _vl_dbase_normal(seedr, mean, sd);
int32_t i;
if (r >= 0) {
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
} else {
r = -r;
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
i = -i;
}
return static_cast<IData>(i);
const double r = _vl_dbase_normal(seedr, mean, sd);
return _vl_round_to_int32(r);
}
IData VL_DIST_POISSON(IData& seedr, IData umean) VL_MT_SAFE {
@@ -192,16 +171,8 @@ IData VL_DIST_T(IData& seedr, IData udf) VL_MT_SAFE {
const double chi2 = _vl_dbase_chi_square(seedr, df);
const double div = chi2 / static_cast<double>(df);
const double root = std::sqrt(div);
double r = _vl_dbase_normal(seedr, 0, 1) / root;
int32_t i;
if (r >= 0) {
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
} else {
r = -r;
i = static_cast<int32_t>(r + 0.5); // cppcheck-suppress bugprone-incorrect-rounding
i = -i;
}
return static_cast<IData>(i);
const double r = _vl_dbase_normal(seedr, 0, 1) / root;
return _vl_round_to_int32(r);
}
IData VL_DIST_UNIFORM(IData& seedr, IData ustart, IData uend) VL_MT_SAFE {