diff options
author | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2008-09-25 17:43:58 +0000 |
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committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2008-09-25 17:43:58 +0000 |
commit | 0e05d9826e6d32a27392ed9d6fe613ef6cf957a0 (patch) | |
tree | 6e88884bf2f757103209ad4d97d61f37db5cc1d7 /libm/s_fpclassify.c | |
parent | cf7b82ed31eaa526c74f8b1af6f0cfec315f1d69 (diff) |
- remove files that are not either LGPL or Public Domain.
- pull replacement funcs for fpmacros.c from glibc
This removes the powerpc/classic implementation which did not state any
license but read:
Copyright © 1991 Apple Computer, Inc. All rights reserved.
and thus was dubious (and not needed).
Diffstat (limited to 'libm/s_fpclassify.c')
-rw-r--r-- | libm/s_fpclassify.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libm/s_fpclassify.c b/libm/s_fpclassify.c new file mode 100644 index 000000000..6175f51ad --- /dev/null +++ b/libm/s_fpclassify.c @@ -0,0 +1,44 @@ +/* Return classification value corresponding to argument. + Copyright (C) 1997, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + + 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_private.h" + +libm_hidden_proto (__fpclassify) +int +__fpclassify (double x) +{ + u_int32_t hx, lx; + int retval = FP_NORMAL; + + EXTRACT_WORDS (hx, lx, x); + lx |= hx & 0xfffff; + hx &= 0x7ff00000; + if ((hx | lx) == 0) + retval = FP_ZERO; + else if (hx == 0) + retval = FP_SUBNORMAL; + else if (hx == 0x7ff00000) + retval = lx != 0 ? FP_NAN : FP_INFINITE; + + return retval; +} +libm_hidden_def (__fpclassify) |