diff options
Diffstat (limited to 'sysdeps/alpha/fpu/s_rint.c')
| -rw-r--r-- | sysdeps/alpha/fpu/s_rint.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/sysdeps/alpha/fpu/s_rint.c b/sysdeps/alpha/fpu/s_rint.c index be09651b35..e9aa028822 100644 --- a/sysdeps/alpha/fpu/s_rint.c +++ b/sysdeps/alpha/fpu/s_rint.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2000, 2006 Free Software Foundation, Inc. +/* Copyright (C) 2000, 2006, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Richard Henderson. @@ -24,24 +24,15 @@ double __rint (double x) { - if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */ - { - double tmp1, new_x; - __asm ( -#ifdef _IEEE_FP_INEXACT - "cvttq/svid %2,%1\n\t" -#else - "cvttq/svd %2,%1\n\t" -#endif - "cvtqt/d %1,%0\n\t" - : "=f"(new_x), "=&f"(tmp1) - : "f"(x)); - - /* rint(-0.1) == -0, and in general we'll always have the same - sign as our input. */ - x = copysign(new_x, x); - } - return x; + double two52 = copysign (0x1.0p52, x); + double r; + + r = x + two52; + r = r - two52; + + /* rint(-0.1) == -0, and in general we'll always have the same sign + as our input. */ + return copysign (r, x); } weak_alias (__rint, rint) |