diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128ibm/s_frexpl.c')
-rw-r--r-- | sysdeps/ieee754/ldbl-128ibm/s_frexpl.c | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_frexpl.c b/sysdeps/ieee754/ldbl-128ibm/s_frexpl.c deleted file mode 100644 index fab566d..0000000 --- a/sysdeps/ieee754/ldbl-128ibm/s_frexpl.c +++ /dev/null @@ -1,92 +0,0 @@ -/* s_frexpl.c -- long double version of s_frexp.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 - -/* - * for non-zero x - * x = frexpl(arg,&exp); - * return a long double fp quantity x such that 0.5 <= |x| <1.0 - * and the corresponding binary exponent "exp". That is - * arg = x*2^exp. - * If arg is inf, 0.0, or NaN, then frexpl(arg,&exp) returns arg - * with *exp=0. - */ - -#include "math.h" -#include "math_private.h" -#include <math_ldbl_opt.h> - -#ifdef __STDC__ -static const long double -#else -static long double -#endif -two107 = 162259276829213363391578010288128.0; /* 0x4670000000000000, 0 */ - -#ifdef __STDC__ - long double __frexpl(long double x, int *eptr) -#else - long double __frexpl(x, eptr) - long double x; int *eptr; -#endif -{ - u_int64_t hx, lx, ix, ixl; - int64_t explo; - GET_LDOUBLE_WORDS64(hx,lx,x); - ixl = 0x7fffffffffffffffULL&lx; - ix = 0x7fffffffffffffffULL&hx; - *eptr = 0; - if(ix>=0x7ff0000000000000ULL||((ix|ixl)==0)) return x; /* 0,inf,nan */ - if (ix<0x0010000000000000ULL) { /* subnormal */ - x *= two107; - GET_LDOUBLE_MSW64(hx,x); - ix = hx&0x7fffffffffffffffULL; - *eptr = -107; - } - *eptr += (ix>>52)-1022; - - if (ixl != 0ULL) { - explo = (ixl>>52) - (ix>>52) + 0x3fe; - if ((ixl&0x7ff0000000000000ULL) == 0LL) { - /* the lower double is a denomal so we need to correct its - mantissa and perhaps its exponent. */ - int cnt; - - if (sizeof (ixl) == sizeof (long)) - cnt = __builtin_clzl (ixl); - else if ((ixl >> 32) != 0) - cnt = __builtin_clzl ((long) (ixl >> 32)); - else - cnt = __builtin_clzl ((long) ixl) + 32; - cnt = cnt - 12; - lx = (lx&0x8000000000000000ULL) | ((explo-cnt)<<52) - | ((ixl<<(cnt+1))&0x000fffffffffffffULL); - } else - lx = (lx&0x800fffffffffffffULL) | (explo<<52); - } else - lx = 0ULL; - - hx = (hx&0x800fffffffffffffULL) | 0x3fe0000000000000ULL; - SET_LDOUBLE_WORDS64(x,hx,lx); - return x; -} -#ifdef IS_IN_libm -long_double_symbol (libm, __frexpl, frexpl); -#else -long_double_symbol (libc, __frexpl, frexpl); -#endif |