tests/lib/libm/t_modf.c

   1 /* $NetBSD: t_modf.c,v 1.1 2014/06/16 12:54:43 joerg Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2014 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Joerg Sonnenberger.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <atf-c.h>
  33 #include <float.h>
  34 #include <math.h>
  35
  36 ATF_TC(modf);
  37 ATF_TC_HEAD(modf, tc)
  38 {
  39         atf_tc_set_md_var(tc, "descr","Check modf family");
  40 }
  41
  42 ATF_TC_BODY(modf, tc)
  43 {
  44         float basef;
  45         double base;
  46         long double basel;
  47         ATF_CHECK(modff(1.0, &basef) == 0.0);
  48         ATF_CHECK(basef == 1.0);
  49         ATF_CHECK(modf(1.0, &base) == 0.0);
  50         ATF_CHECK(base == 1.0);
  51         ATF_CHECK(modfl(1.0, &basel) == 0.0);
  52         ATF_CHECK(basel == 1.0);
  53
  54         ATF_CHECK(modff(-1 - FLT_EPSILON, &basef) == -FLT_EPSILON);
  55         ATF_CHECK(basef == -1.0);
  56         ATF_CHECK(modf(-1 - DBL_EPSILON, &base) == -DBL_EPSILON);
  57         ATF_CHECK(base == -1.0);
  58         ATF_CHECK(modfl(-1 - LDBL_EPSILON, &basel) == -LDBL_EPSILON);
  59         ATF_CHECK(basel == -1.0);
  60 }
  61
  62 ATF_TP_ADD_TCS(tp)
  63 {
  64
  65         ATF_TP_ADD_TC(tp, modf);
  66
  67         return atf_no_error();
  68 }