diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-96/s_nearbyintl.c')
-rw-r--r-- | sysdeps/ieee754/ldbl-96/s_nearbyintl.c | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/sysdeps/ieee754/ldbl-96/s_nearbyintl.c b/sysdeps/ieee754/ldbl-96/s_nearbyintl.c deleted file mode 100644 index c1d77f0c02..0000000000 --- a/sysdeps/ieee754/ldbl-96/s_nearbyintl.c +++ /dev/null @@ -1,88 +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> - -static const long double -TWO63[2]={ - 9.223372036854775808000000e+18, /* 0x403E, 0x00000000, 0x00000000 */ - -9.223372036854775808000000e+18 /* 0xC03E, 0x00000000, 0x00000000 */ -}; - -long double __nearbyintl(long double x) -{ - 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]; - math_force_eval (t); - 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==30) i1 = 0x40000000; else - i0 = (i0&(~i))|((0x20000000)>>j0); - } - } - } 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]; - math_force_eval (t); - fesetenv (&env); - return t; -} -weak_alias (__nearbyintl, nearbyintl) |