diff options
Diffstat (limited to 'core/math/math_funcs.h')
| -rw-r--r-- | core/math/math_funcs.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/core/math/math_funcs.h b/core/math/math_funcs.h index ca960aabad..45509a0808 100644 --- a/core/math/math_funcs.h +++ b/core/math/math_funcs.h @@ -110,6 +110,15 @@ public: static _ALWAYS_INLINE_ bool is_inf(double p_val) { #ifdef _MSC_VER return !_finite(p_val); +// use an inline implementation of isinf as a workaround for problematic libstdc++ versions from gcc 5.x era +#elif defined(__GNUC__) && __GNUC__ < 6 + union { + uint64_t u; + double f; + } ieee754; + ieee754.f = p_val; + return ((unsigned)(ieee754.u >> 32) & 0x7fffffff) == 0x7ff00000 && + ((unsigned)ieee754.u == 0); #else return isinf(p_val); #endif @@ -118,6 +127,14 @@ public: static _ALWAYS_INLINE_ bool is_inf(float p_val) { #ifdef _MSC_VER return !_finite(p_val); +// use an inline implementation of isinf as a workaround for problematic libstdc++ versions from gcc 5.x era +#elif defined(__GNUC__) && __GNUC__ < 6 + union { + uint32_t u; + float f; + } ieee754; + ieee754.f = p_val; + return (ieee754.u & 0x7fffffff) == 0x7f800000; #else return isinf(p_val); #endif |