llvm/compiler-rt/test/builtins/Unit/arm/aeabi_cdcmpeq_test.c

// REQUIRES: arm-target-arch || armv6m-target-arch
// RUN: %clang_builtins %s %librt -o %t && %run %t

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#if __arm__
#include "call_apsr.h"

extern __attribute__((pcs("aapcs"))) void __aeabi_cdcmpeq(double a, double b);

int test__aeabi_cdcmpeq(double a, double b, int expected)
{
    uint32_t cpsr_value = call_apsr_d(a, b, __aeabi_cdcmpeq);
    union cpsr cpsr = { .value = cpsr_value };
    if (expected != cpsr.flags.z) {
        printf("error in __aeabi_cdcmpeq(%f, %f) => Z = %d, expected %d\n",
               a, b, cpsr.flags.z, expected);
        return 1;
    }
    return 0;
}
#endif

int main()
{
#if __arm__
    if (test__aeabi_cdcmpeq(1.0, 1.0, 1))
        return 1;
    if (test__aeabi_cdcmpeq(1234.567, 765.4321, 0))
        return 1;
    if (test__aeabi_cdcmpeq(-123.0, -678.0, 0))
        return 1;
    if (test__aeabi_cdcmpeq(0.0, -0.0, 1))
        return 1;
    if (test__aeabi_cdcmpeq(1.0, NAN, 0))
        return 1;
    if (test__aeabi_cdcmpeq(NAN, 1.0, 0))
        return 1;
    if (test__aeabi_cdcmpeq(NAN, NAN, 0))
        return 1;
    if (test__aeabi_cdcmpeq(INFINITY, 1.0, 0))
        return 1;
    if (test__aeabi_cdcmpeq(0.0, INFINITY, 0))
        return 1;
    if (test__aeabi_cdcmpeq(-INFINITY, 0.0, 0))
        return 1;
    if (test__aeabi_cdcmpeq(0.0, -INFINITY, 0))
        return 1;
    if (test__aeabi_cdcmpeq(INFINITY, INFINITY, 1))
        return 1;
    if (test__aeabi_cdcmpeq(-INFINITY, -INFINITY, 1))
        return 1;
#else
    printf("skipped\n");
#endif
    return 0;
}