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| // RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_fixunsxfti
// REQUIRES: x86-target-arch
//===-- fixunsxfti_test.c - Test __fixunsxfti -----------------------------===//
//
// 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 __fixunsxfti for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
// Returns: convert a to a unsigned long long, rounding toward zero.
// Negative values all become zero.
// Assumption: long double is an intel 80 bit floating point type padded with 6 bytes
// tu_int is a 64 bit integral type
// value in long double is representable in tu_int or is negative
// (no range checking performed)
// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee eeee |
// 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
COMPILER_RT_ABI tu_int __fixunsxfti(long double a);
int test__fixunsxfti(long double a, tu_int expected)
{
tu_int x = __fixunsxfti(a);
if (x != expected)
{
utwords xt;
xt.all = x;
utwords expectedt;
expectedt.all = expected;
printf("error in __fixunsxfti(%LA) = 0x%.16llX%.16llX, expected 0x%.16llX%.16llX\n",
a, xt.s.high, xt.s.low, expectedt.s.high, expectedt.s.low);
}
return x != expected;
}
char assumption_1[sizeof(tu_int) == 2*sizeof(du_int)] = {0};
char assumption_2[sizeof(tu_int)*CHAR_BIT == 128] = {0};
char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
#endif
int main()
{
#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
if (test__fixunsxfti(0.0, 0))
return 1;
if (test__fixunsxfti(0.5, 0))
return 1;
if (test__fixunsxfti(0.99, 0))
return 1;
if (test__fixunsxfti(1.0, 1))
return 1;
if (test__fixunsxfti(1.5, 1))
return 1;
if (test__fixunsxfti(1.99, 1))
return 1;
if (test__fixunsxfti(2.0, 2))
return 1;
if (test__fixunsxfti(2.01, 2))
return 1;
if (test__fixunsxfti(-0.5, 0))
return 1;
if (test__fixunsxfti(-0.99, 0))
return 1;
if (test__fixunsxfti(-1.0, 0))
return 1;
if (test__fixunsxfti(-1.5, 0))
return 1;
if (test__fixunsxfti(-1.99, 0))
return 1;
if (test__fixunsxfti(-2.0, 0))
return 1;
if (test__fixunsxfti(-2.01, 0))
return 1;
if (test__fixunsxfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
return 1;
if (test__fixunsxfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
return 1;
if (test__fixunsxfti(-0x1.FFFFFEp+62, 0))
return 1;
if (test__fixunsxfti(-0x1.FFFFFCp+62, 0))
return 1;
if (test__fixunsxfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
return 1;
if (test__fixunsxfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
return 1;
if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFp+62, 0))
return 1;
if (test__fixunsxfti(-0x1.FFFFFFFFFFFFEp+62, 0))
return 1;
if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+63L, 0xFFFFFFFFFFFFFFFFLL))
return 1;
if (test__fixunsxfti(0x1.0000000000000002p+63L, 0x8000000000000001LL))
return 1;
if (test__fixunsxfti(0x1.0000000000000000p+63L, 0x8000000000000000LL))
return 1;
if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+62L, 0x7FFFFFFFFFFFFFFFLL))
return 1;
if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+62L, 0x7FFFFFFFFFFFFFFELL))
return 1;
if (test__fixunsxfti(-0x1.0000000000000000p+63L, 0))
return 1;
if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFFCp+62L, 0))
return 1;
if (test__fixunsxfti(-0x1.FFFFFFFFFFFFFFF8p+62L, 0))
return 1;
if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFEp+127L, make_ti(0xFFFFFFFFFFFFFFFFLL, 0)))
return 1;
if (test__fixunsxfti(0x1.0000000000000002p+127L, make_ti(0x8000000000000001LL, 0)))
return 1;
if (test__fixunsxfti(0x1.0000000000000000p+127L, make_ti(0x8000000000000000LL, 0)))
return 1;
if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFFCp+126L, make_ti(0x7FFFFFFFFFFFFFFFLL, 0)))
return 1;
if (test__fixunsxfti(0x1.FFFFFFFFFFFFFFF8p+126L, make_ti(0x7FFFFFFFFFFFFFFELL, 0)))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}
|