diff options
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/helper.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 4f2b44036f..6c0e59f15a 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -2707,11 +2707,16 @@ uint32_t HELPER(vfp_fcvt_f32_to_f16)(float32 a, CPUState *env) return do_fcvt_f32_to_f16(a, env, &env->vfp.fp_status); } +#define float32_two make_float32(0x40000000) + float32 HELPER(recps_f32)(float32 a, float32 b, CPUState *env) { - float_status *s = &env->vfp.fp_status; - float32 two = int32_to_float32(2, s); - return float32_sub(two, float32_mul(a, b, s), s); + float_status *s = &env->vfp.standard_fp_status; + if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) || + (float32_is_infinity(b) && float32_is_zero_or_denormal(a))) { + return float32_two; + } + return float32_sub(float32_two, float32_mul(a, b, s), s); } float32 HELPER(rsqrts_f32)(float32 a, float32 b, CPUState *env) |