forked from OSchip/llvm-project
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
//===-- fixdfdi_test.c - Test __fixdfdi -----------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file tests __fixdfdi for the compiler_rt library.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "int_lib.h"
|
|
#include <stdio.h>
|
|
|
|
// Returns: convert a to a signed long long, rounding toward zero.
|
|
|
|
// Assumption: double is a IEEE 64 bit floating point type
|
|
// su_int is a 32 bit integral type
|
|
// value in double is representable in di_int (no range checking performed)
|
|
|
|
// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
|
|
|
|
di_int __fixdfdi(double a);
|
|
|
|
int test__fixdfdi(double a, di_int expected)
|
|
{
|
|
di_int x = __fixdfdi(a);
|
|
if (x != expected)
|
|
printf("error in __fixdfdi(%A) = %llX, expected %llX\n", a, x, expected);
|
|
return x != expected;
|
|
}
|
|
|
|
char assumption_1[sizeof(di_int) == 2*sizeof(si_int)] = {0};
|
|
char assumption_2[sizeof(su_int)*CHAR_BIT == 32] = {0};
|
|
char assumption_3[sizeof(double)*CHAR_BIT == 64] = {0};
|
|
|
|
int main()
|
|
{
|
|
if (test__fixdfdi(0.0, 0))
|
|
return 1;
|
|
|
|
if (test__fixdfdi(0.5, 0))
|
|
return 1;
|
|
if (test__fixdfdi(0.99, 0))
|
|
return 1;
|
|
if (test__fixdfdi(1.0, 1))
|
|
return 1;
|
|
if (test__fixdfdi(1.5, 1))
|
|
return 1;
|
|
if (test__fixdfdi(1.99, 1))
|
|
return 1;
|
|
if (test__fixdfdi(2.0, 2))
|
|
return 1;
|
|
if (test__fixdfdi(2.01, 2))
|
|
return 1;
|
|
if (test__fixdfdi(-0.5, 0))
|
|
return 1;
|
|
if (test__fixdfdi(-0.99, 0))
|
|
return 1;
|
|
if (test__fixdfdi(-1.0, -1))
|
|
return 1;
|
|
if (test__fixdfdi(-1.5, -1))
|
|
return 1;
|
|
if (test__fixdfdi(-1.99, -1))
|
|
return 1;
|
|
if (test__fixdfdi(-2.0, -2))
|
|
return 1;
|
|
if (test__fixdfdi(-2.01, -2))
|
|
return 1;
|
|
|
|
if (test__fixdfdi(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
|
|
return 1;
|
|
if (test__fixdfdi(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
|
|
return 1;
|
|
|
|
if (test__fixdfdi(-0x1.FFFFFEp+62, 0x8000008000000000LL))
|
|
return 1;
|
|
if (test__fixdfdi(-0x1.FFFFFCp+62, 0x8000010000000000LL))
|
|
return 1;
|
|
|
|
if (test__fixdfdi(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
|
|
return 1;
|
|
if (test__fixdfdi(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
|
|
return 1;
|
|
|
|
if (test__fixdfdi(-0x1.FFFFFFFFFFFFFp+62, 0x8000000000000400LL))
|
|
return 1;
|
|
if (test__fixdfdi(-0x1.FFFFFFFFFFFFEp+62, 0x8000000000000800LL))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|