diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_ilogbl.c')
-rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/s_ilogbl.c | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_ilogbl.c b/sysdeps/ieee754/ldbl-128ibm/s_ilogbl.c deleted file mode 100644 index 428854d..0000000 --- a/sysdeps/ieee754/ldbl-128ibm/s_ilogbl.c +++ /dev/null @@ -1,63 +0,0 @@ -/* s_ilogbl.c -- long double version of s_ilogb.c. - * Conversion to IEEE quad long double by Jakub Jelinek, jj@ultra.linux.cz. - */ - -/* - * ==================================================== - * 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" -#include <math_ldbl_opt.h> - -#ifdef __STDC__ - int __ilogbl(long double x) -#else - int __ilogbl(x) - long double x; -#endif -{ - int64_t hx,lx; - int ix; - - GET_LDOUBLE_WORDS64(hx,lx,x); - hx &= 0x7fffffffffffffffLL; - if(hx <= 0x0010000000000000LL) { - if((hx|(lx&0x7fffffffffffffffLL))==0) - return FP_ILOGB0; /* ilogbl(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<0x7ff0000000000000LL) return (hx>>52)-0x3ff; - else if (FP_ILOGBNAN != INT_MAX) { - /* ISO C99 requires ilogbl(+-Inf) == INT_MAX. */ - if (((hx^0x7ff0000000000000LL)|lx) == 0) - return INT_MAX; - } - return FP_ILOGBNAN; -} -long_double_symbol (libm, __ilogbl, ilogbl); |