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| // RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_fixunssfti
// REQUIRES: int128
//===-- fixunssfti_test.c - Test __fixunssfti -----------------------------===//
//
// 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 __fixunssfti for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#include "int_lib.h"
#include <stdio.h>
#ifdef CRT_HAS_128BIT
// Returns: convert a to a unsigned long long, rounding toward zero.
// Negative values all become zero.
// Assumption: float is a IEEE 32 bit floating point type
// tu_int is a 64 bit integral type
// value in float is representable in tu_int or is negative
// (no range checking performed)
// seee eeee emmm mmmm mmmm mmmm mmmm mmmm
COMPILER_RT_ABI tu_int __fixunssfti(float a);
int test__fixunssfti(float a, tu_int expected)
{
tu_int x = __fixunssfti(a);
if (x != expected)
{
utwords xt;
xt.all = x;
utwords expectedt;
expectedt.all = expected;
printf("error in __fixunssfti(%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(di_int)] = {0};
char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
char assumption_3[sizeof(float)*CHAR_BIT == 32] = {0};
#endif
int main()
{
#ifdef CRT_HAS_128BIT
if (test__fixunssfti(0.0F, 0))
return 1;
if (test__fixunssfti(0.5F, 0))
return 1;
if (test__fixunssfti(0.99F, 0))
return 1;
if (test__fixunssfti(1.0F, 1))
return 1;
if (test__fixunssfti(1.5F, 1))
return 1;
if (test__fixunssfti(1.99F, 1))
return 1;
if (test__fixunssfti(2.0F, 2))
return 1;
if (test__fixunssfti(2.01F, 2))
return 1;
if (test__fixunssfti(-0.5F, 0))
return 1;
if (test__fixunssfti(-0.99F, 0))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfti(-1.0F, 0)) // libgcc ignores "returns 0 for negative input" spec
return 1;
if (test__fixunssfti(-1.5F, 0))
return 1;
if (test__fixunssfti(-1.99F, 0))
return 1;
if (test__fixunssfti(-2.0F, 0))
return 1;
if (test__fixunssfti(-2.01F, 0))
return 1;
#endif
if (test__fixunssfti(0x1.FFFFFEp+63F, 0xFFFFFF0000000000ULL))
return 1;
if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000ULL))
return 1;
if (test__fixunssfti(0x1.FFFFFEp+62F, 0x7FFFFF8000000000LL))
return 1;
if (test__fixunssfti(0x1.FFFFFCp+62F, 0x7FFFFF0000000000LL))
return 1;
if (test__fixunssfti(0x1.FFFFFEp+127F, make_ti(0xFFFFFF0000000000ULL, 0)))
return 1;
if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000ULL, 0)))
return 1;
if (test__fixunssfti(0x1.FFFFFEp+126F, make_ti(0x7FFFFF8000000000LL, 0)))
return 1;
if (test__fixunssfti(0x1.FFFFFCp+126F, make_ti(0x7FFFFF0000000000LL, 0)))
return 1;
#if !TARGET_LIBGCC
if (test__fixunssfti(-0x1.FFFFFEp+62F, 0x0000000000000000LL))
return 1;
if (test__fixunssfti(-0x1.FFFFFCp+62F, 0x0000000000000000LL))
return 1;
if (test__fixunssfti(-0x1.FFFFFEp+126F, 0x0000000000000000LL))
return 1;
if (test__fixunssfti(-0x1.FFFFFCp+126F, 0x0000000000000000LL))
return 1;
#endif
#endif
return 0;
}
|