divtf3_test.c
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// RUN: %clang_builtins %s %librt -o %t && %run %t
// REQUIRES: librt_has_divtf3
#include "int_lib.h"
#include <stdio.h>
#if __LDBL_MANT_DIG__ == 113
#include "fp_test.h"
// Returns: a / b
COMPILER_RT_ABI long double __divtf3(long double a, long double b);
int test__divtf3(long double a, long double b,
uint64_t expectedHi, uint64_t expectedLo)
{
long double x = __divtf3(a, b);
int ret = compareResultLD(x, expectedHi, expectedLo);
if (ret){
printf("error in test__divtf3(%.20Le, %.20Le) = %.20Le, "
"expected %.20Le\n", a, b, x,
fromRep128(expectedHi, expectedLo));
}
return ret;
}
char assumption_1[sizeof(long double) * CHAR_BIT == 128] = {0};
#endif
int main()
{
#if __LDBL_MANT_DIG__ == 113
// Returned NaNs are assumed to be qNaN by default
// qNaN / any = qNaN
if (test__divtf3(makeQNaN128(),
0x1.23456789abcdefp+5L,
UINT64_C(0x7fff800000000000),
UINT64_C(0x0)))
return 1;
// NaN / any = NaN
if (test__divtf3(makeNaN128(UINT64_C(0x30000000)),
0x1.23456789abcdefp+5L,
UINT64_C(0x7fff800000000000),
UINT64_C(0x0)))
return 1;
// any / qNaN = qNaN
if (test__divtf3(0x1.23456789abcdefp+5L,
makeQNaN128(),
UINT64_C(0x7fff800000000000),
UINT64_C(0x0)))
return 1;
// any / NaN = NaN
if (test__divtf3(0x1.23456789abcdefp+5L,
makeNaN128(UINT64_C(0x30000000)),
UINT64_C(0x7fff800000000000),
UINT64_C(0x0)))
return 1;
// +Inf / positive = +Inf
if (test__divtf3(makeInf128(), 3.L,
UINT64_C(0x7fff000000000000),
UINT64_C(0x0)))
return 1;
// +Inf / negative = -Inf
if (test__divtf3(makeInf128(), -3.L,
UINT64_C(0xffff000000000000),
UINT64_C(0x0)))
return 1;
// -Inf / positive = -Inf
if (test__divtf3(makeNegativeInf128(), 3.L,
UINT64_C(0xffff000000000000),
UINT64_C(0x0)))
return 1;
// -Inf / negative = +Inf
if (test__divtf3(makeNegativeInf128(), -3.L,
UINT64_C(0x7fff000000000000),
UINT64_C(0x0)))
return 1;
// Inf / Inf = NaN
if (test__divtf3(makeInf128(), makeInf128(),
UINT64_C(0x7fff800000000000),
UINT64_C(0x0)))
return 1;
// 0.0 / 0.0 = NaN
if (test__divtf3(+0x0.0p+0L, +0x0.0p+0L,
UINT64_C(0x7fff800000000000),
UINT64_C(0x0)))
return 1;
// +0.0 / +Inf = +0.0
if (test__divtf3(+0x0.0p+0L, makeInf128(),
UINT64_C(0x0),
UINT64_C(0x0)))
return 1;
// +Inf / +0.0 = +Inf
if (test__divtf3(makeInf128(), +0x0.0p+0L,
UINT64_C(0x7fff000000000000),
UINT64_C(0x0)))
return 1;
// positive / +0.0 = +Inf
if (test__divtf3(+1.0L, +0x0.0p+0L,
UINT64_C(0x7fff000000000000),
UINT64_C(0x0)))
return 1;
// positive / -0.0 = -Inf
if (test__divtf3(+1.0L, -0x0.0p+0L,
UINT64_C(0xffff000000000000),
UINT64_C(0x0)))
return 1;
// negative / +0.0 = -Inf
if (test__divtf3(-1.0L, +0x0.0p+0L,
UINT64_C(0xffff000000000000),
UINT64_C(0x0)))
return 1;
// negative / -0.0 = +Inf
if (test__divtf3(-1.0L, -0x0.0p+0L,
UINT64_C(0x7fff000000000000),
UINT64_C(0x0)))
return 1;
// 1/3
if (test__divtf3(1.L, 3.L,
UINT64_C(0x3ffd555555555555),
UINT64_C(0x5555555555555555)))
return 1;
// smallest normal result
if (test__divtf3(0x1.0p-16381L, 2.L,
UINT64_C(0x0001000000000000),
UINT64_C(0x0)))
return 1;
// divisor is exactly 1.0
if (test__divtf3(0x1.0p+0L,
0x1.0p+0L,
UINT64_C(0x3fff000000000000),
UINT64_C(0x0)))
return 1;
// divisor is truncated to exactly 1.0 in UQ1.63
if (test__divtf3(0x1.0p+0L,
0x1.0000000000000001p+0L,
UINT64_C(0x3ffeffffffffffff),
UINT64_C(0xfffe000000000000)))
return 1;
// smallest normal value divided by 2.0
if (test__divtf3(0x1.0p-16382L, 2.L, UINT64_C(0x0000800000000000), UINT64_C(0x0)))
return 1;
// smallest subnormal result
if (test__divtf3(0x1.0p-16382L, 0x1p+112L, UINT64_C(0x0), UINT64_C(0x1)))
return 1;
// any / any
if (test__divtf3(0x1.a23b45362464523375893ab4cdefp+5L,
0x1.eedcbaba3a94546558237654321fp-1L,
UINT64_C(0x4004b0b72924d407),
UINT64_C(0x0717e84356c6eba2)))
return 1;
if (test__divtf3(0x1.a2b34c56d745382f9abf2c3dfeffp-50L,
0x1.ed2c3ba15935332532287654321fp-9L,
UINT64_C(0x3fd5b2af3f828c9b),
UINT64_C(0x40e51f64cde8b1f2)))
return 15;
if (test__divtf3(0x1.2345f6aaaa786555f42432abcdefp+456L,
0x1.edacbba9874f765463544dd3621fp+6400L,
UINT64_C(0x28c62e15dc464466),
UINT64_C(0xb5a07586348557ac)))
return 1;
if (test__divtf3(0x1.2d3456f789ba6322bc665544edefp-234L,
0x1.eddcdba39f3c8b7a36564354321fp-4455L,
UINT64_C(0x507b38442b539266),
UINT64_C(0x22ce0f1d024e1252)))
return 1;
if (test__divtf3(0x1.2345f6b77b7a8953365433abcdefp+234L,
0x1.edcba987d6bb3aa467754354321fp-4055L,
UINT64_C(0x50bf2e02f0798d36),
UINT64_C(0x5e6fcb6b60044078)))
return 1;
if (test__divtf3(6.72420628622418701252535563464350521E-4932L,
2.L,
UINT64_C(0x0001000000000000),
UINT64_C(0)))
return 1;
#else
printf("skipped\n");
#endif
return 0;
}