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Merge pull request #12237 from JJenkx/windows/libc-lrint-indefinite

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fix(libc): return the integer indefinite from lrint and llrint out of range
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Dean authored and GitHub committed 2026-10-29 12:11:19 +13:00
2 parents 206970d663 86b89d7de9
commit 1d8bcebafe
2 files changed
+10 -16
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core/libs/prx/libc/src/MathExact.cpp
+5 -16
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@@ -5,6 +5,7 @@
#include <cmath>
#include <cstdint>
#include <cstring>
#include <emmintrin.h>
#include <limits>
#include "prx/libc/include/General.hpp"
@@ -179,25 +180,13 @@ long double APS5_VABI fmal_nid_postfix(long double x, long double y, long double
double APS5_VABI rint_nid_postfix(double x) { return std::isnan(x) ? x + x : std::rint(x); }
float APS5_VABI rintf_nid_postfix(float x) { return std::isnan(x) ? x + x : std::rint(x); }
std::int64_t APS5_VABI lrint_nid_postfix(double x) {
ErrnoGuard guard;
return std::llrint(x);
}
std::int64_t APS5_VABI lrint_nid_postfix(double x) { return _mm_cvtsd_si64(_mm_set_sd(x)); }
std::int64_t APS5_VABI lrintf_nid_postfix(float x) {
ErrnoGuard guard;
return std::llrint(x);
}
std::int64_t APS5_VABI lrintf_nid_postfix(float x) { return _mm_cvtss_si64(_mm_set_ss(x)); }
long long APS5_VABI llrint_nid_postfix(double x) {
ErrnoGuard guard;
return std::llrint(x);
}
long long APS5_VABI llrint_nid_postfix(double x) { return _mm_cvtsd_si64(_mm_set_sd(x)); }
long long APS5_VABI llrintf_nid_postfix(float x) {
ErrnoGuard guard;
return std::llrint(x);
}
long long APS5_VABI llrintf_nid_postfix(float x) { return _mm_cvtss_si64(_mm_set_ss(x)); }
double APS5_VABI drem_nid_postfix(double x, double y) {
return Remainder(x, y);
core/libs/tests/GuestMathExact.cpp
+5
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@@ -103,6 +103,11 @@ static void CheckConsoleQuirks() {
Require(scalblnl_nid_postfix(1.0L, INT64_C(0x100000001)) == 2.0L && scalblnl_nid_postfix(1.0L, INT64_MAX) == 0.5L);
Require(scalbln_nid_postfix(1.0, INT64_C(0x100000001)) == INFINITY && scalbln_nid_postfix(1.0, INT64_MIN) == 0.0);
Require(lrint_nid_postfix(0x1p40) == INT64_C(0x10000000000));
for (const double outside : {0x1p63, -0x1p64, 1e300, static_cast<double>(INFINITY), -static_cast<double>(INFINITY), static_cast<double>(NAN)}) {
Require(lrint_nid_postfix(outside) == INT64_MIN && llrint_nid_postfix(outside) == LLONG_MIN);
Require(lrintf_nid_postfix(static_cast<float>(outside)) == INT64_MIN && llrintf_nid_postfix(static_cast<float>(outside)) == LLONG_MIN);
}
Require(lrint_nid_postfix(-0x1p63) == INT64_MIN && lrintf_nid_postfix(0x1.fffffep62f) == INT64_C(0x7fffff8000000000));
const long double product = Extended(0x4000, 0xe000000000000000ull) * Extended(0x4001, 0xda76b022816f6a94ull);
Require(SameBits(fmal_nid_postfix(Extended(0x4000, 0xe000000000000000ull), Extended(0x4001, 0xda76b022816f6a94ull), Extended(0x9b45, 0xd3b49eac84283c95ull)), product));
Require(finite_nid_postfix(1.0) == 1 && finite_nid_postfix(INFINITY) == 0);