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Use threadsafe versions of lgamma and lgammaf if possible.

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This commit is contained in:
Rasmus Munk Larsen 2016-10-27 16:17:12 -07:00
parent 530f20c21a
commit 2ebb314fa7
1 changed files with 35 additions and 21 deletions
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18
unsupported/Eigen/src/SpecialFunctions/SpecialFunctionsImpl.h
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@ -120,13 +120,27 @@ struct lgamma_retval {
template <>
struct lgamma_impl<float> {
EIGEN_DEVICE_FUNC
static EIGEN_STRONG_INLINE float run(float x) { return ::lgammaf(x); }
static EIGEN_STRONG_INLINE float run(float x) {
#ifdef _BSD_SOURCE || _SVID_SOURCE
int signgam;
return ::lgammaf_r(x, &signgam);
#else
return ::lgammaf(x);
#endif
}
};
template <>
struct lgamma_impl<double> {
EIGEN_DEVICE_FUNC
static EIGEN_STRONG_INLINE double run(double x) { return ::lgamma(x); }
static EIGEN_STRONG_INLINE double run(double x) {
#ifdef _BSD_SOURCE || _SVID_SOURCE
int signgam;
return ::lgammaf_r(x, &signgam);
#else
return ::lgamma(x);
#endif
}
};
#endif