diff options
Diffstat (limited to 'contrib/netbsd-tests/lib/libm/t_precision.c')
| -rw-r--r-- | contrib/netbsd-tests/lib/libm/t_precision.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/contrib/netbsd-tests/lib/libm/t_precision.c b/contrib/netbsd-tests/lib/libm/t_precision.c new file mode 100644 index 0000000..390be9d --- /dev/null +++ b/contrib/netbsd-tests/lib/libm/t_precision.c @@ -0,0 +1,76 @@ +/* $NetBSD: t_precision.c,v 1.1 2013/11/11 11:10:45 joerg Exp $ */ + +/*- + * Copyright (c) 2013 The NetBSD Foundation, Inc. + * All rights reserved. + * + * This code is derived from software contributed to The NetBSD Foundation + * by Joerg Sonnenberger. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#include <sys/cdefs.h> +__RCSID("$NetBSD: t_precision.c,v 1.1 2013/11/11 11:10:45 joerg Exp $"); + +#include <atf-c.h> +#include <atf-c/config.h> + +#include <float.h> +#include <stdlib.h> + +ATF_TC(t_precision); + +ATF_TC_HEAD(t_precision, tc) +{ + atf_tc_set_md_var(tc, "descr", + "Basic precision test for double and long double"); +} + +volatile double x = 1; +volatile long double y = 1; + +ATF_TC_BODY(t_precision, tc) +{ + x += DBL_EPSILON; + ATF_CHECK(x != 1.0); + x -= 1; + ATF_CHECK(x == DBL_EPSILON); + + x = 2; + x += DBL_EPSILON; + ATF_CHECK(x == 2.0); + + y += LDBL_EPSILON; + ATF_CHECK(y != 1.0L); + y -= 1; + ATF_CHECK(y == LDBL_EPSILON); + y = 2; + y += LDBL_EPSILON; + ATF_CHECK(y == 2.0L); +} + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, t_precision); + + return atf_no_error(); +} |
