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| author | Karl Berry <karl@freefriends.org> | 2009-05-16 00:19:13 +0000 |
|---|---|---|
| committer | Karl Berry <karl@freefriends.org> | 2009-05-16 00:19:13 +0000 |
| commit | bab45528d65eaafe68a705dbb2a57075c7b7cbd8 (patch) | |
| tree | 10b4ae2b5195c8dede153ab89359ec00f55f325f /Build/source/utils/asymptote/fpu.h | |
| parent | 8643d90372e9c31e0f461c15c596b60a545bd7d3 (diff) | |
asymptote 1.72 sources (not integrated into build yet)
git-svn-id: svn://tug.org/texlive/trunk@13110 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/utils/asymptote/fpu.h')
| -rw-r--r-- | Build/source/utils/asymptote/fpu.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/Build/source/utils/asymptote/fpu.h b/Build/source/utils/asymptote/fpu.h new file mode 100644 index 00000000000..5fa7205b43f --- /dev/null +++ b/Build/source/utils/asymptote/fpu.h @@ -0,0 +1,40 @@ +#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 |