diff options
Diffstat (limited to 'sysdeps/powerpc/s_llround.c')
-rw-r--r-- | sysdeps/powerpc/s_llround.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sysdeps/powerpc/s_llround.c b/sysdeps/powerpc/s_llround.c new file mode 100644 index 0000000000..fbe3a3217c --- /dev/null +++ b/sysdeps/powerpc/s_llround.c @@ -0,0 +1,46 @@ +/* Round long double value to long int. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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> + +/* I think that what this routine is supposed to do is round a value + to the nearest integer, with values exactly on the boundary rounded + away from zero. */ +/* This routine relies on (long long)x, when x is out of range of a long long, + clipping to MAX_LLONG or MIN_LLONG. */ + +long long int +__llround (long double x) +{ + long double xrf; + long long int xr; + xr = (long long int) x; + xrf = (long double) xr; + if (x >= 0.0) + if (x - xrf >= 0.5 && x - xrf < 1.0 && x+1 > 0) + return x+1; + else + return x; + else + if (xrf - x >= 0.5 && xrf - x < 1.0 && x-1 < 0) + return x-1; + else + return x; +} +weak_alias (__llround, llround) |