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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:
*
* 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 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.
*/
#include <fputils/fp80.h>
#include "test_helper.h"
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
static void
test_cvfd_class(const char *name, double fin)
{
test_diag("converting '%e' -> fp80...", fin);
fp80_t v = fp80_cvfd(fin);
int class_ok;
int fp64_class = fpclassify(fin);
int class = fp64_class == FP_SUBNORMAL ? FP_NORMAL : fp64_class;
int fp80_class = fp80_classify(v);
printf("# ");
fp80_debug_dump(stdout, v);
test_diag("isnan: %i, isinf: %i, iszero: %i, isnormal: %i, issubnormal: %i",
fp80_isnan(v), fp80_isinf(v), fp80_iszero(v),
fp80_isnormal(v), fp80_issubnormal(v));
test_diag("class(fp64): %i, expected class: %i, class(fp80): %i",
fp64_class, class, fp80_classify(v));
switch (class) {
case FP_NAN:
class_ok = fp80_isnan(v) && !fp80_isinf(v) && !fp80_iszero(v) &&
!fp80_isnormal(v) && !fp80_issubnormal(v);
break;
case FP_INFINITE:
class_ok = !fp80_isnan(v) && fp80_isinf(v) && !fp80_iszero(v) &&
!fp80_isnormal(v) && !fp80_issubnormal(v);
break;
case FP_ZERO:
class_ok = !fp80_isnan(v) && !fp80_isinf(v) && fp80_iszero(v) &&
!fp80_isnormal(v) && !fp80_issubnormal(v);
break;
case FP_SUBNORMAL:
class_ok = !fp80_isnan(v) && !fp80_isinf(v) && !fp80_iszero(v) &&
!fp80_isnormal(v) && fp80_issubnormal(v);
break;
case FP_NORMAL:
class_ok = !fp80_isnan(v) && !fp80_isinf(v) && !fp80_iszero(v) &&
fp80_isnormal(v) && !fp80_issubnormal(v);
break;
default:
test_bail("unexpected FP class (%i)", class);
}
if (!class_ok) {
test_diag("inconsistent classification");
test_fail(name);
} else if (fp80_class != class) {
test_diag("class mismatch");
test_fail(name);
} else {
test_ok(name);
}
}
static void
test_cvfd_class_exp(const char *name, double x, int exp)
{
double val = ldexp(x, exp);
test_cvfd_class(name, val);
}
int
main(int argc, char *argv[])
{
test_init(9);
test_cvfd_class("double->fp80 +inf", -INFINITY);
test_cvfd_class("double->fp80 -inf", INFINITY);
test_cvfd_class("double->fp80 +nan", NAN);
test_cvfd_class("double->fp80 -nan", -NAN);
test_cvfd_class("double->fp80 +0", 0);
test_cvfd_class("double->fp80 PI", M_PI);
test_cvfd_class_exp("double->fp80 smallest normal", 1.0, -1022);
test_cvfd_class_exp("double->fp80 denormal1", 0.5, -1022);
test_cvfd_class_exp("double->fp80 denormal2", 0.25, -1022);
test_exit();
}
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