blob: 33f0596c1b143b95f1452f7a3ee24917b569fa75 [file] [log] [blame]
//===-- fixunssfti_test.c - Test __fixunssfti -----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file tests __fixunssfti for the compiler_rt library.
//
//===----------------------------------------------------------------------===//
#if __x86_64
#include "int_lib.h"
#include <stdio.h>
// 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
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()
{
#if __x86_64
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, 0xFFFFFF0000000000LL))
return 1;
if (test__fixunssfti(0x1.000000p+63F, 0x8000000000000000LL))
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(0xFFFFFF0000000000LL, 0)))
return 1;
if (test__fixunssfti(0x1.000000p+127F, make_ti(0x8000000000000000LL, 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;
}