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author | Joseph Myers <joseph@codesourcery.com> | 2012-07-01 13:08:59 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2012-07-01 13:08:59 +0000 |
commit | e84eabb3871c9b39e59323bf3f6b98c2ca9d1cd0 (patch) | |
tree | dff3f1b79454b518d15a7b9bbedeb57ff156bbe8 /ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c | |
parent | 75f0d3040a2c2de8842bfa7a09e11da1a73e17d0 (diff) | |
parent | e64ac02c24b43659048622714afdc92fedf561fa (diff) | |
download | glibc-2.16.90.tar.gz glibc-2.16.90.tar.xz glibc-2.16.90.zip |
Merge glibc-ports into ports/ directory. glibc-2.16.90 glibc-2.16-ports-merge
Diffstat (limited to 'ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c')
-rw-r--r-- | ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c b/ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c new file mode 100644 index 0000000000..dd5b95c730 --- /dev/null +++ b/ports/sysdeps/m68k/m680x0/fpu/s_llrintf.c @@ -0,0 +1,65 @@ +/* Round argument to nearest integral value according to current rounding + direction. + Copyright (C) 1997, 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> + + 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, see + <http://www.gnu.org/licenses/>. */ + +#include <math.h> +#include <math_private.h> +#include "mathimpl.h" + +long long int +__llrintf (float x) +{ + int32_t e; + u_int32_t i, s; + long long int result; + + x = __m81_u(__rintf) (x); + + GET_FLOAT_WORD (i, x); + + e = ((i >> 23) & 0xff) - 0x7f; + if (e < 0) + return 0; + s = i; + i &= 0x7fffff; + i |= 0x800000; + + if (e < 63) + { + if (e > 55) + result = (long long int) (i << (e - 55)) << 32; + else if (e > 31) + result = (((long long int) (i >> (55 - e)) << 32) | (i << (e - 23))); + else if (e > 23) + result = i << (e - 23); + else + result = i >> (23 - e); + if (s & 0x80000000) + result = -result; + } + else + /* The number is too large or not finite. The standard leaves it + undefined what to return when the number is too large to fit in a + `long long int'. */ + result = -1LL; + + return result; +} + +weak_alias (__llrintf, llrintf) |