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author | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
commit | abfbdde177c3a7155070dda1b2cdc8292054cc26 (patch) | |
tree | e021306b596381fbf8311d2b7eb294e918ff17c8 /sysdeps/libm-ieee754/s_nearbyintl.c | |
parent | 86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff) | |
download | glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.gz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.xz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.zip |
Update.
Diffstat (limited to 'sysdeps/libm-ieee754/s_nearbyintl.c')
-rw-r--r-- | sysdeps/libm-ieee754/s_nearbyintl.c | 100 |
1 files changed, 0 insertions, 100 deletions
diff --git a/sysdeps/libm-ieee754/s_nearbyintl.c b/sysdeps/libm-ieee754/s_nearbyintl.c deleted file mode 100644 index 3b0715e5a5..0000000000 --- a/sysdeps/libm-ieee754/s_nearbyintl.c +++ /dev/null @@ -1,100 +0,0 @@ -/* s_rintl.c -- long double version of s_rint.c. - * Conversion to long double by Ulrich Drepper, - * Cygnus Support, drepper@cygnus.com. - */ -/* Adapted for use as nearbyint by Ulrich Drepper <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. - * ==================================================== - */ - -/* - * rintl(x) - * Return x rounded to integral value according to the prevailing - * rounding mode. - * Method: - * Using floating addition. - * Exception: - * Inexact flag raised if x not equal to rintl(x). - */ - -#include <fenv.h> -#include "math.h" -#include "math_private.h" - -#ifdef __STDC__ -static const long double -#else -static long double -#endif -TWO63[2]={ - 9.223372036854775808000000e+18, /* 0x403E, 0x00000000, 0x00000000 */ - -9.223372036854775808000000e+18 /* 0xC03E, 0x00000000, 0x00000000 */ -}; - -#ifdef __STDC__ - long double __nearbyintl(long double x) -#else - long double __nearbyintl(x) - long double x; -#endif -{ - fenv_t env; - int32_t se,j0,sx; - u_int32_t i,i0,i1; - long double w,t; - GET_LDOUBLE_WORDS(se,i0,i1,x); - sx = (se>>15)&1; - j0 = (se&0x7fff)-0x3fff; - if(j0<31) { - if(j0<0) { - if(((se&0x7fff)|i0|i1)==0) return x; - i1 |= i0; - i0 &= 0xe0000000; - i0 |= (i1|-i1)&0x80000000; - SET_LDOUBLE_MSW(x,i0); - feholdexcept (&env); - w = TWO63[sx]+x; - t = w-TWO63[sx]; - fesetenv (&env); - GET_LDOUBLE_EXP(i0,t); - SET_LDOUBLE_EXP(t,(i0&0x7fff)|(sx<<15)); - return t; - } else { - i = (0x7fffffff)>>j0; - if(((i0&i)|i1)==0) return x; /* x is integral */ - i>>=1; - if(((i0&i)|i1)!=0) { - if(j0==31) i1 = 0x40000000; else - i0 = (i0&(~i))|((0x20000000)>>j0); - /* Shouldn't this be - if (j0 >= 30) i1 = 0x80000000 >> (j0 - 30); - i0 = (i0&(~i))|((0x20000000)>>j0); - If yes, this should be correct in s_rint and - s_rintf, too. -- drepper@cygnus.com */ - } - } - } else if (j0>62) { - if(j0==0x4000) return x+x; /* inf or NaN */ - else return x; /* x is integral */ - } else { - i = ((u_int32_t)(0xffffffff))>>(j0-31); - if((i1&i)==0) return x; /* x is integral */ - i>>=1; - if((i1&i)!=0) i1 = (i1&(~i))|((0x40000000)>>(j0-31)); - } - SET_LDOUBLE_WORDS(x,se,i0,i1); - feholdexcept (&env); - w = TWO63[sx]+x; - t = w-TWO63[sx]; - fesetenv (&env); - return t; -} -weak_alias (__nearbyintl, nearbyintl) |