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Diffstat (limited to 'sysdeps/libm-ieee754/s_finitef.c')
| -rw-r--r-- | sysdeps/libm-ieee754/s_finitef.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/libm-ieee754/s_finitef.c b/sysdeps/libm-ieee754/s_finitef.c new file mode 100644 index 0000000000..baafc31aec --- /dev/null +++ b/sysdeps/libm-ieee754/s_finitef.c @@ -0,0 +1,39 @@ +/* s_finitef.c -- float version of s_finite.c. + * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. + */ + +/* + * ==================================================== + * 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. + * ==================================================== + */ + +#if defined(LIBM_SCCS) && !defined(lint) +static char rcsid[] = "$NetBSD: s_finitef.c,v 1.4 1995/05/10 20:47:18 jtc Exp $"; +#endif + +/* + * finitef(x) returns 1 is x is finite, else 0; + * no branching! + */ + +#include "math.h" +#include "math_private.h" + +#ifdef __STDC__ + int __finitef(float x) +#else + int __finitef(x) + float x; +#endif +{ + int32_t ix; + GET_FLOAT_WORD(ix,x); + return (int)((u_int32_t)((ix&0x7fffffff)-0x7f800000)>>31); +} +weak_alias (__finitef, finitef) |