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// RUN: %clang_builtins %s %librt -o %t && %run %t
//===--------------- subtf3_test.c - Test __subtf3 ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file tests __subtf3 for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include <stdio.h>
#if __LDBL_MANT_DIG__ == 113
#include "int_lib.h"
#include "fp_test.h"
// Returns: a - b
COMPILER_RT_ABI long double __subtf3(long double a, long double b);
int test__subtf3(long double a, long double b,
uint64_t expectedHi, uint64_t expectedLo)
{
long double x = __subtf3(a, b);
int ret = compareResultLD(x, expectedHi, expectedLo);
if (ret){
printf("error in test__subtf3(%.20Lf, %.20Lf) = %.20Lf, "
"expected %.20Lf\n", a, b, x,
fromRep128(expectedHi, expectedLo));
}
return ret;
}
char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
#endif
int main()
{
#if __LDBL_MANT_DIG__ == 113
// qNaN - any = qNaN
if (test__subtf3(makeQNaN128(),
0x1.23456789abcdefp+5L,
UINT64_C(0x7fff800000000000),
UINT64_C(0x0)))
return 1;
// NaN - any = NaN
if (test__subtf3(makeNaN128(UINT64_C(0x800030000000)),
0x1.23456789abcdefp+5L,
UINT64_C(0x7fff800000000000),
UINT64_C(0x0)))
return 1;
// inf - any = inf
if (test__subtf3(makeInf128(),
0x1.23456789abcdefp+5L,
UINT64_C(0x7fff000000000000),
UINT64_C(0x0)))
return 1;
// any - any
if (test__subtf3(0x1.234567829a3bcdef5678ade36734p+5L,
0x1.ee9d7c52354a6936ab8d7654321fp-1L,
UINT64_C(0x40041b8af1915166),
UINT64_C(0xa44a7bca780a166c)))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}
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