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author | Ulrich Drepper <drepper@redhat.com> | 1999-12-29 18:11:48 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1999-12-29 18:11:48 +0000 |
commit | d876f5327985eac3bf3109e9429febc8a8954ff5 (patch) | |
tree | 2ab0233054876a59507ff2ef9652ef81b1317991 /soft-fp/sysdeps/sparc/sparc64/s_frexpl.c | |
parent | dbbbaf53352501384c57512e2251c9d7169388af (diff) | |
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Update.
1999-12-29 Ulrich Drepper <drepper@cygnus.com>
* soft-fp/*: Tons of new files to implement floating-point arithmetic
in software.
Contributed by Richard Henderson, Jakub Jelinek and others.
Diffstat (limited to 'soft-fp/sysdeps/sparc/sparc64/s_frexpl.c')
-rw-r--r-- | soft-fp/sysdeps/sparc/sparc64/s_frexpl.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/soft-fp/sysdeps/sparc/sparc64/s_frexpl.c b/soft-fp/sysdeps/sparc/sparc64/s_frexpl.c new file mode 100644 index 0000000000..a307a7e113 --- /dev/null +++ b/soft-fp/sysdeps/sparc/sparc64/s_frexpl.c @@ -0,0 +1,52 @@ +/* Software floating-point emulation. + frexpl(x, exp) + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek (jj@ultra.linux.cz). + + 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. */ + +/* + * for non-zero x + * x = frexpl(arg,&exp); + * return a long double fp quantity x such that 0.5 <= |x| <1.0 + * and the corresponding binary exponent "exp". That is + * arg = x*2^exp. + * If arg is inf, 0.0, or NaN, then frexpl(arg,&exp) returns arg + * with *exp=0. + */ + +#include "soft-fp.h" +#include "quad.h" + +long double __frexpl(long double arg, int *exp) +{ + FP_DECL_EX; + FP_DECL_Q(A); + long double r; + + *exp = 0; + FP_UNPACK_Q(A, arg); + if (A_c != FP_CLS_NORMAL) + return arg; + *exp = A_e + 1; + A_e = -1; + FP_PACK_Q(r, A); + + return r; +} + +weak_alias (__frexpl, frexpl) |