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[CLANG][CUDA] Enable nan/nanf from libdevice in device code #158301

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[CLANG][CUDA] Enable nan/nanf from libdevice in device code #158301

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100645e
[CLANG][CUDA] Enable nan/nanf from libdevice in device code
DenisGZM Sep 12, 2025
15a7d02
Merge branch 'main' into clang-cuda-nan
DenisGZM Sep 12, 2025
4aec345
Merge branch 'main' into clang-cuda-nan
DenisGZM Sep 14, 2025
89ffabd
Merge branch 'main' into clang-cuda-nan
DenisGZM Sep 14, 2025
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4 changes: 2 additions & 2 deletions clang/lib/Headers/__clang_cuda_libdevice_declares.h
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Expand Up @@ -269,8 +269,8 @@ __DEVICE__ float __nv_modff(float __a, float *__b);
__DEVICE__ int __nv_mul24(int __a, int __b);
__DEVICE__ long long __nv_mul64hi(long long __a, long long __b);
__DEVICE__ int __nv_mulhi(int __a, int __b);
__DEVICE__ double __nv_nan(const signed char *__a);
__DEVICE__ float __nv_nanf(const signed char *__a);
__DEVICE__ double __nv_nan(const char *__a);
__DEVICE__ float __nv_nanf(const char *__a);
__DEVICE__ double __nv_nearbyint(double __a);
__DEVICE__ float __nv_nearbyintf(float __a);
__DEVICE__ double __nv_nextafter(double __a, double __b);
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2 changes: 2 additions & 0 deletions clang/lib/Headers/__clang_cuda_math.h
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Expand Up @@ -201,6 +201,8 @@ __DEVICE__ int max(int __a, int __b) { return __nv_max(__a, __b); }
__DEVICE__ int min(int __a, int __b) { return __nv_min(__a, __b); }
__DEVICE__ double modf(double __a, double *__b) { return __nv_modf(__a, __b); }
__DEVICE__ float modff(float __a, float *__b) { return __nv_modff(__a, __b); }
__DEVICE__ float nanf(const char *__a) { return __nv_nanf(__a); }
__DEVICE__ double nan(const char *__a) { return __nv_nan(__a); }
__DEVICE__ double nearbyint(double __a) { return __builtin_nearbyint(__a); }
__DEVICE__ float nearbyintf(float __a) { return __builtin_nearbyintf(__a); }
__DEVICE__ double nextafter(double __a, double __b) {
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2 changes: 2 additions & 0 deletions clang/test/Headers/Inputs/include/math.h
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Expand Up @@ -107,6 +107,8 @@ long lround(double __a);
long lroundf(float __a);
double modf(double __a, double *__b);
float modff(float __a, float *__b);
float nanf(const char *__a);
double nan(const char *__a);
double nearbyint(double __a);
float nearbyintf(float __a);
double nextafter(double __a, double __b);
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4 changes: 4 additions & 0 deletions clang/test/Headers/nvptx_device_cmath_functions.cpp
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Expand Up @@ -22,5 +22,9 @@ void test_sqrt(double a1) {
double l4 = fabs(a1);
// CHECK-YES: call noundef i32 @__nv_abs(i32
double l5 = abs((int)a1);
// CHECK-YES: call noundef float @__nv_nanf(ptr noundef
float l6 = nanf("");
// CHECK-YES: call noundef double @__nv_nan(ptr noundef
double l7 = nan("");
}
}
4 changes: 4 additions & 0 deletions clang/test/Headers/nvptx_device_math_functions.cpp
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Expand Up @@ -22,5 +22,9 @@ void test_sqrt(double a1) {
double l4 = fabs(a1);
// CHECK-YES: call noundef i32 @__nv_abs(i32
double l5 = abs((int)a1);
// CHECK-YES: call noundef float @__nv_nanf(ptr noundef
float l6 = nanf("");
// CHECK-YES: call noundef double @__nv_nan(ptr noundef
double l7 = nan("");
}
}
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