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author | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1999-07-14 00:54:57 +0000 |
commit | abfbdde177c3a7155070dda1b2cdc8292054cc26 (patch) | |
tree | e021306b596381fbf8311d2b7eb294e918ff17c8 /sysdeps/ieee754/ldbl-96/s_fpclassifyl.c | |
parent | 86421aa57ecfd70963ae66848bd6a6dd3b8e0fe6 (diff) | |
download | glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.gz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.tar.xz glibc-abfbdde177c3a7155070dda1b2cdc8292054cc26.zip |
Update.
Diffstat (limited to 'sysdeps/ieee754/ldbl-96/s_fpclassifyl.c')
-rw-r--r-- | sysdeps/ieee754/ldbl-96/s_fpclassifyl.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-96/s_fpclassifyl.c b/sysdeps/ieee754/ldbl-96/s_fpclassifyl.c new file mode 100644 index 0000000000..4df0b44f75 --- /dev/null +++ b/sysdeps/ieee754/ldbl-96/s_fpclassifyl.c @@ -0,0 +1,44 @@ +/* Return classification value corresponding to argument. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. + Fixed 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. 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" + + +int +__fpclassifyl (long double x) +{ + u_int32_t ex, hx, lx, m; + int retval = FP_NORMAL; + + GET_LDOUBLE_WORDS (ex, hx, lx, x); + m = (hx & 0x7fffffff) | lx; + ex &= 0x7fff; + if ((ex | m) == 0) + retval = FP_ZERO; + else if (ex == 0 && (hx & 0x80000000) == 0) + retval = FP_SUBNORMAL; + else if (ex == 0x7fff) + retval = m != 0 ? FP_NAN : FP_INFINITE; + + return retval; +} |