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#include "numeric_utils.h"

bool gmio_float32_ulp_equals(float a, float b, uint32_t max_ulp_diff)
{
    const int32_t ia = gmio_convert_int32(a);
    const int32_t ib = gmio_convert_int32(b);
    const int32_t slp_diff = ia - ib;
    const uint32_t ulp_diff = slp_diff > 0 ? slp_diff : -slp_diff;

    /* Different signs, we could maybe get difference to 0, but so close to 0
     * using epsilons is better */
    if (gmio_int32_sign(ia) != gmio_int32_sign(ib)) {
        /* Check for equality to make sure +0 == -0 */
        return ia == ib;
    }

    /* Find the difference in ULPs */
    return ulp_diff <= max_ulp_diff;
}