115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
// RUN: %clang_builtins %s %librt -o %t && %run %t
|
|
// REQUIRES: librt_has_fixdfti
|
|
// REQUIRES: int128
|
|
|
|
#include "int_lib.h"
|
|
#include <stdio.h>
|
|
|
|
#ifdef CRT_HAS_128BIT
|
|
|
|
// 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 ti_int (no range checking performed)
|
|
|
|
// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm
|
|
|
|
COMPILER_RT_ABI ti_int __fixdfti(double a);
|
|
|
|
int test__fixdfti(double a, ti_int expected)
|
|
{
|
|
ti_int x = __fixdfti(a);
|
|
if (x != expected)
|
|
{
|
|
twords xt;
|
|
xt.all = x;
|
|
twords expectedt;
|
|
expectedt.all = expected;
|
|
printf("error in __fixdfti(%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(ti_int) == 2*sizeof(di_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__fixdfti(0.0, 0))
|
|
return 1;
|
|
|
|
if (test__fixdfti(0.5, 0))
|
|
return 1;
|
|
if (test__fixdfti(0.99, 0))
|
|
return 1;
|
|
if (test__fixdfti(1.0, 1))
|
|
return 1;
|
|
if (test__fixdfti(1.5, 1))
|
|
return 1;
|
|
if (test__fixdfti(1.99, 1))
|
|
return 1;
|
|
if (test__fixdfti(2.0, 2))
|
|
return 1;
|
|
if (test__fixdfti(2.01, 2))
|
|
return 1;
|
|
if (test__fixdfti(-0.5, 0))
|
|
return 1;
|
|
if (test__fixdfti(-0.99, 0))
|
|
return 1;
|
|
if (test__fixdfti(-1.0, -1))
|
|
return 1;
|
|
if (test__fixdfti(-1.5, -1))
|
|
return 1;
|
|
if (test__fixdfti(-1.99, -1))
|
|
return 1;
|
|
if (test__fixdfti(-2.0, -2))
|
|
return 1;
|
|
if (test__fixdfti(-2.01, -2))
|
|
return 1;
|
|
|
|
if (test__fixdfti(0x1.FFFFFEp+62, 0x7FFFFF8000000000LL))
|
|
return 1;
|
|
if (test__fixdfti(0x1.FFFFFCp+62, 0x7FFFFF0000000000LL))
|
|
return 1;
|
|
|
|
if (test__fixdfti(-0x1.FFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
|
|
0x8000008000000000LL)))
|
|
return 1;
|
|
if (test__fixdfti(-0x1.FFFFFCp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
|
|
0x8000010000000000LL)))
|
|
return 1;
|
|
|
|
if (test__fixdfti(0x1.FFFFFFFFFFFFFp+62, 0x7FFFFFFFFFFFFC00LL))
|
|
return 1;
|
|
if (test__fixdfti(0x1.FFFFFFFFFFFFEp+62, 0x7FFFFFFFFFFFF800LL))
|
|
return 1;
|
|
|
|
if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
|
|
0x8000000000000400LL)))
|
|
return 1;
|
|
if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+62, make_ti(0xFFFFFFFFFFFFFFFFLL,
|
|
0x8000000000000800LL)))
|
|
return 1;
|
|
|
|
if (test__fixdfti(0x1.FFFFFFFFFFFFFp+126, make_ti(0x7FFFFFFFFFFFFC00LL, 0)))
|
|
return 1;
|
|
if (test__fixdfti(0x1.FFFFFFFFFFFFEp+126, make_ti(0x7FFFFFFFFFFFF800LL, 0)))
|
|
return 1;
|
|
|
|
if (test__fixdfti(-0x1.FFFFFFFFFFFFFp+126, make_ti(0x8000000000000400LL, 0)))
|
|
return 1;
|
|
if (test__fixdfti(-0x1.FFFFFFFFFFFFEp+126, make_ti(0x8000000000000800LL, 0)))
|
|
return 1;
|
|
|
|
#else
|
|
printf("skipped\n");
|
|
#endif
|
|
return 0;
|
|
}
|