diff options
Diffstat (limited to 'sysdeps/sparc/sparc64/soft-fp/s_scalbnl.c')
| -rw-r--r-- | sysdeps/sparc/sparc64/soft-fp/s_scalbnl.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/soft-fp/s_scalbnl.c b/sysdeps/sparc/sparc64/soft-fp/s_scalbnl.c new file mode 100644 index 0000000000..fb913fdd6b --- /dev/null +++ b/sysdeps/sparc/sparc64/soft-fp/s_scalbnl.c @@ -0,0 +1,55 @@ +/* Software floating-point emulation. + scalbnl(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. */ + +/* + * scalbnl (long double x, int n) + * scalbnl(x,n) returns x* 2**n computed by exponent + * manipulation rather than by actually performing an + * exponentiation or a multiplication. + */ + +#include "soft-fp.h" +#include "quad.h" + +long double __scalbnl(long double arg, int exp) +{ + FP_DECL_EX; + FP_DECL_Q(A); + long double r; + + FP_UNPACK_Q(A, arg); + switch (A_c) + { + case FP_CLS_ZERO: + return arg; + case FP_CLS_NAN: + case FP_CLS_INF: + FP_HANDLE_EXCEPTIONS; + return arg; + } + A_e += exp; + FP_PACK_Q(r, A); + FP_HANDLE_EXCEPTIONS; + + return r; +} + +weak_alias (__scalbnl, scalbnl) |