diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-96/e_ilogbl.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/e_ilogbl.c | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/sysdeps/ieee754/ldbl-96/e_ilogbl.c b/sysdeps/ieee754/ldbl-96/e_ilogbl.c deleted file mode 100644 index 0c7d9d5440..0000000000 --- a/sysdeps/ieee754/ldbl-96/e_ilogbl.c +++ /dev/null @@ -1,59 +0,0 @@ -/* s_ilogbl.c -- long double version of s_ilogb.c. - * Conversion to long double by Ulrich Drepper, - * Cygnus Support, drepper@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: $"; -#endif - -/* ilogbl(long double x) - * return the binary exponent of non-zero x - * ilogbl(0) = FP_ILOGB0 - * ilogbl(NaN) = FP_ILOGBNAN (no signal is raised) - * ilogbl(+-Inf) = INT_MAX (no signal is raised) - */ - -#include <limits.h> -#include <math.h> -#include <math_private.h> - -int __ieee754_ilogbl (long double x) -{ - int32_t es,hx,lx,ix; - - GET_LDOUBLE_EXP(es,x); - es &= 0x7fff; - if(es==0) { - GET_LDOUBLE_WORDS(es,hx,lx,x); - if((hx|lx)==0) - return FP_ILOGB0; /* ilogbl(0) = FP_ILOGB0 */ - else /* subnormal x */ - if(hx==0) { - for (ix = -16415; lx>0; lx<<=1) ix -=1; - } else { - for (ix = -16383; hx>0; hx<<=1) ix -=1; - } - return ix; - } - else if (es<0x7fff) return es-0x3fff; - else if (FP_ILOGBNAN != INT_MAX) - { - GET_LDOUBLE_WORDS(es,hx,lx,x); - if (((hx & 0x7fffffff)|lx) == 0) - /* ISO C99 requires ilogbl(+-Inf) == INT_MAX. */ - return INT_MAX; - } - return FP_ILOGBNAN; -} |