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author | Richard Henderson <rth@redhat.com> | 2007-03-14 17:44:14 +0000 |
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committer | Richard Henderson <rth@redhat.com> | 2007-03-14 17:44:14 +0000 |
commit | aea1d19e2f2f6f1b95521c8fbbbddfb92097db60 (patch) | |
tree | 065a8ec8487c1e556ad760abaeb1ee6d3572d2f9 /sysdeps/alpha/fpu/s_nearbyint.c | |
parent | 9e43b50d490b396c8eb1b0a19e3bc1037487f029 (diff) | |
download | glibc-aea1d19e2f2f6f1b95521c8fbbbddfb92097db60.tar.gz glibc-aea1d19e2f2f6f1b95521c8fbbbddfb92097db60.tar.xz glibc-aea1d19e2f2f6f1b95521c8fbbbddfb92097db60.zip |
* sysdeps/alpha/fpu/s_ceil.c: Rewrite without branches.
* sysdeps/alpha/fpu/s_ceilf.c: Likewise. * sysdeps/alpha/fpu/s_floor.c: Likewise. * sysdeps/alpha/fpu/s_floorf.c: Likewise. * sysdeps/alpha/fpu/s_rint.c: Likewise. * sysdeps/alpha/fpu/s_rintf.c: Likewise. * sysdeps/alpha/fpu/s_fmax.S: New file. * sysdeps/alpha/fpu/s_fmaxf.S: New file. * sysdeps/alpha/fpu/s_fmin.S: New file. * sysdeps/alpha/fpu/s_fminf.S: New file. * sysdeps/alpha/fpu/s_isnan.c: New file. * sysdeps/alpha/fpu/s_isnanf.c: New file. * sysdeps/alpha/fpu/s_llrint.c: New file. * sysdeps/alpha/fpu/s_llrintf.c: New file. * sysdeps/alpha/fpu/s_lrint.c: New file. * sysdeps/alpha/fpu/s_lrintf.c: New file. * sysdeps/alpha/fpu/s_nearbyint.c: New file. * sysdeps/alpha/fpu/s_nearbyintf.c: New file. * sysdeps/alpha/fpu/bits/mathinline.h (__floorf, __floor): Remove. (__fdimf, fdimf, __fdim, fdim): Remove. (__signbitf, __signbit, __signbitl): Use gcc builtin if available. (__isnanf, __isnan, __isnanl): New. 2007-03-14 Richard Henderson <rth@redhat.com> * sysdeps/alpha/fpu/s_ceil.c: Rewrite without branches. * sysdeps/alpha/fpu/s_ceilf.c: Likewise. * sysdeps/alpha/fpu/s_floor.c: Likewise. * sysdeps/alpha/fpu/s_floorf.c: Likewise. * sysdeps/alpha/fpu/s_rint.c: Likewise. * sysdeps/alpha/fpu/s_rintf.c: Likewise. * sysdeps/alpha/fpu/s_fmax.S: New file. * sysdeps/alpha/fpu/s_fmaxf.S: New file. * sysdeps/alpha/fpu/s_fmin.S: New file. * sysdeps/alpha/fpu/s_fminf.S: New file. * sysdeps/alpha/fpu/s_isnan.c: New file. * sysdeps/alpha/fpu/s_isnanf.c: New file. * sysdeps/alpha/fpu/s_llrint.c: New file. * sysdeps/alpha/fpu/s_llrintf.c: New file. * sysdeps/alpha/fpu/s_lrint.c: New file. * sysdeps/alpha/fpu/s_lrintf.c: New file. * sysdeps/alpha/fpu/s_nearbyint.c: New file. * sysdeps/alpha/fpu/s_nearbyintf.c: New file. * sysdeps/alpha/fpu/bits/mathinline.h (__floorf, __floor): Remove. (__fdimf, fdimf, __fdim, fdim): Remove. (__signbitf, __signbit, __signbitl): Use gcc builtin if available. (__isnanf, __isnan, __isnanl): New.
Diffstat (limited to 'sysdeps/alpha/fpu/s_nearbyint.c')
-rw-r--r-- | sysdeps/alpha/fpu/s_nearbyint.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/sysdeps/alpha/fpu/s_nearbyint.c b/sysdeps/alpha/fpu/s_nearbyint.c new file mode 100644 index 0000000000..7a91bd115b --- /dev/null +++ b/sysdeps/alpha/fpu/s_nearbyint.c @@ -0,0 +1,48 @@ +/* Copyright (C) 2007 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <math.h> +#include <math_ldbl_opt.h> + +#ifdef _IEEE_FP_INEXACT +#error "Don't compile with -mieee-with-inexact" +#endif + +double +__nearbyint (double x) +{ + double two52 = copysign (0x1.0p52, x); + double r; + + r = x + two52; + r = r - two52; + + /* nearbyint(-0.1) == -0, and in general we'll always have the same sign + as our input. */ + return copysign (r, x); +} + +weak_alias (__nearbyint, nearbyint) +#ifdef NO_LONG_DOUBLE +strong_alias (__nearbyint, __nearbyintl) +weak_alias (__nearbyint, nearbyintl) +#endif +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) +compat_symbol (libm, __nearbyint, nearbyintl, GLIBC_2_0); +#endif |