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Diffstat (limited to 'math/s_significand.c')
| -rw-r--r-- | math/s_significand.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/math/s_significand.c b/math/s_significand.c new file mode 100644 index 0000000..4a02dbc --- /dev/null +++ b/math/s_significand.c @@ -0,0 +1,39 @@ +/* @(#)s_signif.c 5.1 93/09/24 */ +/* + * ==================================================== + * 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_significand.c,v 1.6 1995/05/10 20:48:11 jtc Exp $"; +#endif + +/* + * significand(x) computes just + * scalb(x, (double) -ilogb(x)), + * for exercising the fraction-part(F) IEEE 754-1985 test vector. + */ + +#include <math.h> +#include "math_private.h" + +#ifdef __STDC__ + double __significand(double x) +#else + double __significand(x) + double x; +#endif +{ + return __ieee754_scalb(x,(double) -__ilogb(x)); +} +weak_alias (__significand, significand) +#ifdef NO_LONG_DOUBLE +strong_alias (__significand, __significandl) +weak_alias (__significand, significandl) +#endif |