float32 HELPER(vfp_mulxs)(float32 a, float32 b, void *fpstp)
{
float_status *fpst = fpstp;
a = float32_squash_input_denormal(a, fpst);
b = float32_squash_input_denormal(b, fpst);
if ((float32_is_zero(a) && float32_is_infinity(b)) ||
(float32_is_infinity(a) && float32_is_zero(b))) {
/* 2.0 with the sign bit set to sign(A) XOR sign(B) */
return make_float32((1U << 30) |
((float32_val(a) ^ float32_val(b)) & (1U << 31)));
}
return float32_mul(a, b, fpst);
}
/* 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;
}