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/*
* Copyright (c) 2013 Andreas Sandberg
* All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* 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;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*
* Authors: Andreas Sandberg
*/
#include <fputils/fp80.h>
#include "test_helper.h"
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
static void
test_cvtf(const char *name, double fin)
{
fp80_t v80 = fp80_cvfd(fin);
double v64 = fp80_cvtd(v80);
test_diag("Conversion '%e' -> fp80 -> double: %e", fin, v64);
printf("# ");
fp80_debug_dump(stdout, v80);
if (v64 == fin ||
(isnan(fin) && isnan(v64) && signbit(fin) == signbit(v64))) {
test_ok(name);
} else {
test_diag("MISMATCH: %e != %e", fin, v64);
test_fail(name);
}
}
static void
test_cvtf_exp(const char *name, double x, int exp)
{
double val = ldexp(x, exp);
test_cvtf(name, val);
}
int
main(int argc, char *argv[])
{
test_init(9);
test_cvtf("+inf", -INFINITY);
test_cvtf("-inf", INFINITY);
test_cvtf("+nan", NAN);
test_cvtf("-nan", -NAN);
test_cvtf("+0", 0);
test_cvtf("PI", M_PI);
test_cvtf_exp("smallest normal", 1.0, -1022);
test_cvtf_exp("denormal1", 0.5, -1022);
test_cvtf_exp("denormal2", 0.25, -1022);
test_exit();
}
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