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// RUN: %clang_builtins %s %librt -o %t && %run %t
#define SINGLE_PRECISION
#include <fenv.h>
#include <float.h>
#include <limits.h>
#include <math.h>
#include <stdio.h>
#include "fp_lib.h"
int test__compiler_rt_scalbnf(const char *mode, fp_t x, int y) {
#if defined(__ve__)
if (fpclassify(x) == FP_SUBNORMAL)
return 0;
#endif
fp_t crt_value = __compiler_rt_scalbnf(x, y);
fp_t libm_value = scalbnf(x, y);
// Consider +/-0 unequal, but disregard the sign/payload of NaN.
if (toRep(crt_value) != toRep(libm_value) &&
!(crt_isnan(crt_value) && crt_isnan(libm_value))) {
printf("error: [%s] in __compiler_rt_scalbnf(%a [%X], %d) = %a [%X] "
"!= %a [%X]\n",
mode, x, toRep(x), y, crt_value, toRep(crt_value),
libm_value, toRep(libm_value));
return 1;
}
return 0;
}
fp_t cases[] = {
-NAN, NAN, -INFINITY, INFINITY, -0.0, 0.0, -1, 1, -2, 2,
FLT_TRUE_MIN, FLT_TRUE_MIN*7, FLT_MIN, FLT_MAX,
-1.001, 1.001, -1.002, 1.002, 1.e-6, -1.e-6,
0x1.0p-125,
0x1.0p-126,
0x1.0p-127, // subnormal
0x1.0p-128, // subnormal
};
int iterate_cases(const char *mode) {
const unsigned N = sizeof(cases) / sizeof(cases[0]);
unsigned i;
for (i = 0; i < N; ++i) {
int j;
for (j = -5; j <= 5; ++j) {
if (test__compiler_rt_scalbnf(mode, cases[i], j)) return 1;
}
if (test__compiler_rt_scalbnf(mode, cases[i], -1000)) return 1;
if (test__compiler_rt_scalbnf(mode, cases[i], 1000)) return 1;
if (test__compiler_rt_scalbnf(mode, cases[i], INT_MIN)) return 1;
if (test__compiler_rt_scalbnf(mode, cases[i], INT_MAX)) return 1;
}
return 0;
}
int main() {
if (iterate_cases("default")) return 1;
// Rounding mode tests on supported architectures. __compiler_rt_scalbnf
// should have the same rounding behavior as single-precision multiplication.
#if (defined(__arm__) || defined(__aarch64__)) && defined(__ARM_FP) || \
defined(__i386__) || defined(__x86_64__)
// Skip these tests for MSVC because its scalbnf function always behaves as if
// the default rounding mode is set (FE_TONEAREST).
#ifndef _MSC_VER
fesetround(FE_UPWARD);
if (iterate_cases("FE_UPWARD")) return 1;
fesetround(FE_DOWNWARD);
if (iterate_cases("FE_DOWNWARD")) return 1;
fesetround(FE_TOWARDZERO);
if (iterate_cases("FE_TOWARDZERO")) return 1;
#endif
fesetround(FE_TONEAREST);
if (iterate_cases("FE_TONEAREST")) return 1;
#endif
return 0;
}
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