diff options
Diffstat (limited to 'newlib/libm/common/s_isinfd.c')
| -rw-r--r-- | newlib/libm/common/s_isinfd.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/newlib/libm/common/s_isinfd.c b/newlib/libm/common/s_isinfd.c new file mode 100644 index 000000000..5a2b04d4e --- /dev/null +++ b/newlib/libm/common/s_isinfd.c @@ -0,0 +1,23 @@ +/* + * __isinfd(x) returns 1 if x is infinity, else 0; + * no branching! + * Added by Cygnus Support. + */ + +#include "fdlibm.h" + +#ifndef _DOUBLE_IS_32BITS + +int +_DEFUN (__isinfd, (x), + double x) +{ + __int32_t hx,lx; + EXTRACT_WORDS(hx,lx,x); + hx &= 0x7fffffff; + hx |= (__uint32_t)(lx|(-lx))>>31; + hx = 0x7ff00000 - hx; + return 1 - (int)((__uint32_t)(hx|(-hx))>>31); +} + +#endif /* _DOUBLE_IS_32BITS */ |