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#ifndef FPU_H
#define FPU_H
#ifdef HAVE_FENV_H
#ifdef _GNU_SOURCE
#define HAVE_FEENABLEEXCEPT
#endif
#endif
#ifdef HAVE_FEENABLEEXCEPT
#include <fenv.h>
inline int fpu_exceptions() {
int excepts=0;
#ifdef FE_INVALID
excepts |= FE_INVALID;
#endif
#ifdef FE_DIVBYZERO
excepts |= FE_DIVBYZERO;
#endif
#ifdef FE_OVERFLOW
excepts |= FE_OVERFLOW;
#endif
return excepts;
}
inline void fpu_trap(bool trap=true)
{
// Conditionally trap FPU exceptions on NaN, zero divide and overflow.
if(trap) feenableexcept(fpu_exceptions());
else fedisableexcept(fpu_exceptions());
}
#else
inline void fpu_trap(bool=true) {}
#endif
#endif
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