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t_modf.c revision 1.1 
      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 }
     69