Revision 6aae3df1 target-arm/helper.c
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} |
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#define float32_two make_float32(0x40000000) |
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#define float32_three make_float32(0x40400000) |
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#define float32_one_point_five make_float32(0x3fc00000) |
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float32 HELPER(recps_f32)(float32 a, float32 b, CPUState *env) |
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{
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| ... | ... | |
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float32 HELPER(rsqrts_f32)(float32 a, float32 b, CPUState *env) |
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{
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float_status *s = &env->vfp.standard_fp_status; |
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float32 two = int32_to_float32(2, s); |
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float32 three = int32_to_float32(3, s); |
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float32 product; |
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if ((float32_is_infinity(a) && float32_is_zero_or_denormal(b)) || |
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(float32_is_infinity(b) && float32_is_zero_or_denormal(a))) {
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product = float32_zero; |
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} else {
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product = float32_mul(a, b, s); |
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return float32_one_point_five; |
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} |
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return float32_div(float32_sub(three, product, s), two, s); |
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product = float32_mul(a, b, s); |
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return float32_div(float32_sub(float32_three, product, s), float32_two, s); |
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} |
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/* NEON helpers. */ |
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