diff options
Diffstat (limited to 'sysdeps/libm-ieee754/s_ilogb.c')
| -rw-r--r-- | sysdeps/libm-ieee754/s_ilogb.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/sysdeps/libm-ieee754/s_ilogb.c b/sysdeps/libm-ieee754/s_ilogb.c deleted file mode 100644 index 820f01c9b2..0000000000 --- a/sysdeps/libm-ieee754/s_ilogb.c +++ /dev/null @@ -1,56 +0,0 @@ -/* @(#)s_ilogb.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_ilogb.c,v 1.9 1995/05/10 20:47:28 jtc Exp $"; -#endif - -/* ilogb(double x) - * return the binary exponent of non-zero x - * ilogb(0) = 0x80000001 - * ilogb(inf/NaN) = 0x7fffffff (no signal is raised) - */ - -#include "math.h" -#include "math_private.h" - -#ifdef __STDC__ - int __ilogb(double x) -#else - int __ilogb(x) - double x; -#endif -{ - int32_t hx,lx,ix; - - GET_HIGH_WORD(hx,x); - hx &= 0x7fffffff; - if(hx<0x00100000) { - GET_LOW_WORD(lx,x); - if((hx|lx)==0) - return FP_ILOGB0; /* ilogb(0) = FP_ILOGB0 */ - else /* subnormal x */ - if(hx==0) { - for (ix = -1043; lx>0; lx<<=1) ix -=1; - } else { - for (ix = -1022,hx<<=11; hx>0; hx<<=1) ix -=1; - } - return ix; - } - else if (hx<0x7ff00000) return (hx>>20)-1023; - else return FP_ILOGBNAN; -} -weak_alias (__ilogb, ilogb) -#ifdef NO_LONG_DOUBLE -strong_alias (__ilogb, __ilogbl) -weak_alias (__ilogb, ilogbl) -#endif |