From a8028612ca7f7b5f61ccd5b71ffa9d7fe26ff2ed Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 7 Dec 2000 00:31:48 +0000 Subject: [PATCH] __uitrunc implementation. --- sysdeps/unix/sysv/aix/uitrunc.c | 42 +++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 sysdeps/unix/sysv/aix/uitrunc.c diff --git a/sysdeps/unix/sysv/aix/uitrunc.c b/sysdeps/unix/sysv/aix/uitrunc.c new file mode 100644 index 0000000000..34a109b409 --- /dev/null +++ b/sysdeps/unix/sysv/aix/uitrunc.c @@ -0,0 +1,42 @@ +/* Copyright (C) 2000 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 + +/* The uitrunc function returns the nearest unsigned integer + to the x parameter in the direction of 0. This actions is + equivalent to truncation off the fraction bits of the x + parameter and then converting x to an unsigned integer. */ +unsigned int +__uitrunc (double x) +{ + double xrf; + unsigned int xr; + xr = (unsigned int) x; + xrf = (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; +}