diff options
Diffstat (limited to 'sysdeps/ieee754')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c new file mode 100644 index 0000000..585f63e --- /dev/null +++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c @@ -0,0 +1,32 @@ +/* + * ==================================================== + * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. + * + * Developed at SunPro, a Sun Microsystems, Inc. business. + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +/* + * finite(x) returns 1 is x is finite, else 0; + * no branching! + */ + +#include "math.h" +#include "math_private.h" + +int +__finite(double x) +{ + int64_t lx; + EXTRACT_WORDS64(lx,x); + return (int)((uint64_t)((lx&INT64_C(0x7fffffffffffffff))-INT64_C(0x7ff0000000000000))>>63); +} +hidden_def (__finite) +weak_alias (__finite, finite) +#ifdef NO_LONG_DOUBLE +strong_alias (__finite, __finitel) +weak_alias (__finite, finitel) +#endif |