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// RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: int128
//===-- fixunsdfti_test.c - Test __fixunsdfti -----------------------------===//
//
// 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 __fixunsdfti for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
// Returns: convert a to a unsigned long long, rounding toward zero.
// Negative values all become zero.
// Assumption: double is a IEEE 64 bit floating point type
// tu_int is a 64 bit integral type
// value in double is representable in tu_int or is negative
// (no range checking performed)
// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
#ifdef CRT_HAS_128BIT
COMPILER_RT_ABI tu_int __fixunsdfti(double a);
int test__fixunsdfti(double a, tu_int expected)
{
tu_int x = __fixunsdfti(a);
if (x != expected)
{
utwords xt;
xt.all = x;
utwords expectedt;
expectedt.all = expected;
printf("error in __fixunsdfti(%A) = 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(su_int)*CHAR_BIT == 32] = {0};
char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
#endif
int main()
{
#ifdef CRT_HAS_128BIT
if (test__fixunsdfti(0.0, 0))
return 1;
if (test__fixunsdfti(0.5, 0))
return 1;
if (test__fixunsdfti(0.99, 0))
return 1;
if (test__fixunsdfti(1.0, 1))
return 1;
if (test__fixunsdfti(1.5, 1))
return 1;
if (test__fixunsdfti(1.99, 1))
return 1;
if (test__fixunsdfti(2.0, 2))
return 1;
if (test__fixunsdfti(2.01, 2))
return 1;
if (test__fixunsdfti(-0.5, 0))
return 1;
if (test__fixunsdfti(-0.99, 0))
return 1;
#if !TARGET_LIBGCC
if (test__fixunsdfti(-1.0, 0)) // libgcc ignores "returns 0 for negative input" spec
return 1;
if (test__fixunsdfti(-1.5, 0))
return 1;
if (test__fixunsdfti(-1.99, 0))
return 1;
if (test__fixunsdfti(-2.0, 0))
return 1;
if (test__fixunsdfti(-2.01, 0))
return 1;
#endif
if (test__fixunsdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
return 1;
if (test__fixunsdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
return 1;
#if !TARGET_LIBGCC
if (test__fixunsdfti(-0x1.FFFFFEp+62, 0))
return 1;
if (test__fixunsdfti(-0x1.FFFFFCp+62, 0))
return 1;
#endif
if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+63, 0xFFFFFFFFFFFFF800ULL))
return 1;
if (test__fixunsdfti(0x1.0000000000000p+63, 0x8000000000000000ULL))
return 1;
if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00ULL))
return 1;
if (test__fixunsdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800ULL))
return 1;
if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+127, make_ti(0xFFFFFFFFFFFFF800ULL, 0)))
return 1;
if (test__fixunsdfti(0x1.0000000000000p+127, make_ti(0x8000000000000000ULL, 0)))
return 1;
if (test__fixunsdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00ULL, 0)))
return 1;
if (test__fixunsdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800ULL, 0)))
return 1;
if (test__fixunsdfti(0x1.0000000000000p+128, make_ti(0xFFFFFFFFFFFFFFFFULL,
0xFFFFFFFFFFFFFFFFULL)))
return 1;
#if !TARGET_LIBGCC
if (test__fixunsdfti(-0x1.FFFFFFFFFFFFFp+62, 0))
return 1;
if (test__fixunsdfti(-0x1.FFFFFFFFFFFFEp+62, 0))
return 1;
#endif
#endif
return 0;
}
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