示例#1
0
/* condition codes for unary FP ops */
uint32_t set_cc_nz_f32(float32 v)
{
    if (float32_is_any_nan(v)) {
        return 3;
    } else if (float32_is_zero(v)) {
        return 0;
    } else if (float32_is_neg(v)) {
        return 1;
    } else {
        return 2;
    }
}
示例#2
0
uint32_t HELPER(ftoui)(float32 v, uint32_t rounding_mode, uint32_t scale)
{
    float_status fp_status = {0};
    float32 res;

    set_float_rounding_mode(rounding_mode, &fp_status);

    res = float32_scalbn(v, scale, &fp_status);

    if (float32_is_neg(v) && !float32_is_any_nan(v)) {
        return float32_to_int32(res, &fp_status);
    } else {
        return float32_to_uint32(res, &fp_status);
    }
}
示例#3
0
/* test data class 32-bit */
uint32_t HELPER(tceb)(CPUS390XState *env, uint32_t f1, uint64_t m2)
{
    float32 v1 = env->fregs[f1].l.upper;
    int neg = float32_is_neg(v1);
    uint32_t cc = 0;

    HELPER_LOG("%s: v1 0x%lx m2 0x%lx neg %d\n", __func__, (long)v1, m2, neg);
    if ((float32_is_zero(v1) && (m2 & (1 << (11-neg)))) ||
        (float32_is_infinity(v1) && (m2 & (1 << (5-neg)))) ||
        (float32_is_any_nan(v1) && (m2 & (1 << (3-neg)))) ||
        (float32_is_signaling_nan(v1) && (m2 & (1 << (1-neg))))) {
        cc = 1;
    } else if (m2 & (1 << (9-neg))) {
        /* assume normalized number */
        cc = 1;
    }

    /* FIXME: denormalized? */
    return cc;
}