You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118 lines
3.8 KiB
118 lines
3.8 KiB
// RUN: %clang_builtins %s %librt -o %t && %run %t
|
|
// REQUIRES: librt_has_divdf3
|
|
|
|
#include "int_lib.h"
|
|
#include <stdio.h>
|
|
|
|
#include "fp_test.h"
|
|
|
|
// Returns: a / b
|
|
COMPILER_RT_ABI double __divdf3(double a, double b);
|
|
|
|
int test__divdf3(double a, double b, uint64_t expected)
|
|
{
|
|
double x = __divdf3(a, b);
|
|
int ret = compareResultD(x, expected);
|
|
|
|
if (ret){
|
|
printf("error in test__divdf3(%.20e, %.20e) = %.20e, "
|
|
"expected %.20e\n", a, b, x,
|
|
fromRep64(expected));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
// Returned NaNs are assumed to be qNaN by default
|
|
|
|
// qNaN / any = qNaN
|
|
if (test__divdf3(makeQNaN64(), 3., UINT64_C(0x7ff8000000000000)))
|
|
return 1;
|
|
// NaN / any = NaN
|
|
if (test__divdf3(makeNaN64(UINT64_C(0x123)), 3., UINT64_C(0x7ff8000000000000)))
|
|
return 1;
|
|
// any / qNaN = qNaN
|
|
if (test__divdf3(3., makeQNaN64(), UINT64_C(0x7ff8000000000000)))
|
|
return 1;
|
|
// any / NaN = NaN
|
|
if (test__divdf3(3., makeNaN64(UINT64_C(0x123)), UINT64_C(0x7ff8000000000000)))
|
|
return 1;
|
|
|
|
// +Inf / positive = +Inf
|
|
if (test__divdf3(makeInf64(), 3., UINT64_C(0x7ff0000000000000)))
|
|
return 1;
|
|
// +Inf / negative = -Inf
|
|
if (test__divdf3(makeInf64(), -3., UINT64_C(0xfff0000000000000)))
|
|
return 1;
|
|
// -Inf / positive = -Inf
|
|
if (test__divdf3(makeNegativeInf64(), 3., UINT64_C(0xfff0000000000000)))
|
|
return 1;
|
|
// -Inf / negative = +Inf
|
|
if (test__divdf3(makeNegativeInf64(), -3., UINT64_C(0x7ff0000000000000)))
|
|
return 1;
|
|
|
|
// Inf / Inf = NaN
|
|
if (test__divdf3(makeInf64(), makeInf64(), UINT64_C(0x7ff8000000000000)))
|
|
return 1;
|
|
// 0.0 / 0.0 = NaN
|
|
if (test__divdf3(+0x0.0p+0, +0x0.0p+0, UINT64_C(0x7ff8000000000000)))
|
|
return 1;
|
|
// +0.0 / +Inf = +0.0
|
|
if (test__divdf3(+0x0.0p+0, makeInf64(), UINT64_C(0x0)))
|
|
return 1;
|
|
// +Inf / +0.0 = +Inf
|
|
if (test__divdf3(makeInf64(), +0x0.0p+0, UINT64_C(0x7ff0000000000000)))
|
|
return 1;
|
|
|
|
// positive / +0.0 = +Inf
|
|
if (test__divdf3(+1.0, +0x0.0p+0, UINT64_C(0x7ff0000000000000)))
|
|
return 1;
|
|
// positive / -0.0 = -Inf
|
|
if (test__divdf3(+1.0, -0x0.0p+0, UINT64_C(0xfff0000000000000)))
|
|
return 1;
|
|
// negative / +0.0 = -Inf
|
|
if (test__divdf3(-1.0, +0x0.0p+0, UINT64_C(0xfff0000000000000)))
|
|
return 1;
|
|
// negative / -0.0 = +Inf
|
|
if (test__divdf3(-1.0, -0x0.0p+0, UINT64_C(0x7ff0000000000000)))
|
|
return 1;
|
|
|
|
// 1/3
|
|
if (test__divdf3(1., 3., UINT64_C(0x3fd5555555555555)))
|
|
return 1;
|
|
// smallest normal result
|
|
if (test__divdf3(0x1.0p-1021, 2., UINT64_C(0x10000000000000)))
|
|
return 1;
|
|
|
|
// divisor is exactly 1.0
|
|
if (test__divdf3(0x1.0p+0, 0x1.0p+0, UINT64_C(0x3ff0000000000000)))
|
|
return 1;
|
|
// divisor is truncated to exactly 1.0 in UQ1.31
|
|
if (test__divdf3(0x1.0p+0, 0x1.00000001p+0, UINT64_C(0x3fefffffffe00000)))
|
|
return 1;
|
|
|
|
// smallest normal value divided by 2.0
|
|
if (test__divdf3(0x1.0p-1022, 2., UINT64_C(0x0008000000000000)))
|
|
return 1;
|
|
// smallest subnormal result
|
|
if (test__divdf3(0x1.0p-1022, 0x1.0p+52, UINT64_C(0x0000000000000001)))
|
|
return 1;
|
|
|
|
// some misc test cases obtained by fuzzing against h/w implementation
|
|
if (test__divdf3(0x1.fdc239dd64735p-658, -0x1.fff9364c0843fp-948, UINT64_C(0xd20fdc8fc0ceffb1)))
|
|
return 1;
|
|
if (test__divdf3(-0x1.78abb261d47c8p+794, 0x1.fb01d537cc5aep+266, UINT64_C(0xe0e7c6148ffc23e3)))
|
|
return 1;
|
|
if (test__divdf3(-0x1.da7dfe6048b8bp-875, 0x1.ffc7ea3ff60a4p-610, UINT64_C(0xaf5dab1fe0269e2a)))
|
|
return 1;
|
|
if (test__divdf3(0x1.0p-1022, 0x1.9p+5, UINT64_C(0x000051eb851eb852)))
|
|
return 1;
|
|
if (test__divdf3(0x1.0p-1022, 0x1.0028p+41, UINT64_C(0x00000000000007ff)))
|
|
return 1;
|
|
if (test__divdf3(0x1.0p-1022, 0x1.0028p+52, UINT64_C(0x1)))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|