diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c deleted file mode 100644 index 8293819981..0000000000 --- a/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c +++ /dev/null @@ -1,66 +0,0 @@ -/* 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. - * ==================================================== - */ - -/* - * rint(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 rint(x). - */ - -#include <fenv.h> -#include <math.h> -#include <math_private.h> - -static const double -TWO52[2]={ - 4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */ - -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */ -}; - -double -__nearbyint(double x) -{ - fenv_t env; - int64_t i0,sx; - int32_t j0; - EXTRACT_WORDS64(i0,x); - sx = (i0>>63)&1; - j0 = ((i0>>52)&0x7ff)-0x3ff; - if(__builtin_expect(j0<52, 1)) { - if(j0<0) { - libc_feholdexcept (&env); - double w = TWO52[sx]+x; - double t = w-TWO52[sx]; - math_opt_barrier(t); - libc_fesetenv (&env); - return __copysign (t, x); - } - } else { - if(j0==0x400) return x+x; /* inf or NaN */ - else return x; /* x is integral */ - } - libc_feholdexcept (&env); - double w = TWO52[sx]+x; - double t = w-TWO52[sx]; - math_opt_barrier (t); - libc_fesetenv (&env); - return t; -} -weak_alias (__nearbyint, nearbyint) -#ifdef NO_LONG_DOUBLE -strong_alias (__nearbyint, __nearbyintl) -weak_alias (__nearbyint, nearbyintl) -#endif |