diff options
Diffstat (limited to 'newlib/libm/math/sf_isinf.c')
| -rw-r--r-- | newlib/libm/math/sf_isinf.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/newlib/libm/math/sf_isinf.c b/newlib/libm/math/sf_isinf.c new file mode 100644 index 000000000..43a8abdf2 --- /dev/null +++ b/newlib/libm/math/sf_isinf.c @@ -0,0 +1,33 @@ +/* + * isinff(x) returns 1 if x is +-infinity, else 0; + * Added by Cygnus Support. + */ + +#include "fdlibm.h" + +#ifdef __STDC__ + int isinff(float x) +#else + int isinff(x) + float x; +#endif +{ + __int32_t ix; + GET_FLOAT_WORD(ix,x); + ix &= 0x7fffffff; + return FLT_UWORD_IS_INFINITE(ix); +} + +#ifdef _DOUBLE_IS_32BITS + +#ifdef __STDC__ + int isinf(double x) +#else + int isinf(x) + double x; +#endif +{ + return isinff((float) x); +} + +#endif /* defined(_DOUBLE_IS_32BITS) */ |