VFPCLASSPD - Floating-Point CLASS Packed Double

VFPCLASSPD k1{k2}, xmm2/m128/m64bcst, imm8    (V5+DQ+VL
__mmask8 _mm_fpclass_pd_mask(__m128d a, int imm8);
__mmask8 _mm_mask_fpclass_pd_mask(__mmask8 k2, __m128d a, int imm8);


For each double, if (1) belongs to one of the classes specified in imm8, set 1, else set 0, to the corresponding bit of (2).
If k2 bit is 0, the corresponding bit of (2) is cleared. Upper bits of (2) are zeroed.
VFPCLASSPD k1{k2}, ymm2/m256/m64bcst, imm8    (V5+DQ+VL
__mmask8 _mm256_fpclass_pd_mask(__m256d a, int imm8);
__mmask8 _mm256_mask_fpclass_pd_mask(__mmask8 k2, __m256d a, int imm8);


For each double, if (1) belongs to one of the classes specified in imm8, set 1, else set 0, to the corresponding bit of (2).
If k2 bit is 0, the corresponding bit of (2) is cleared. Upper bits of (2) are zeroed.
VFPCLASSPD k1{k2}, zmm2/m512/m64bcst, imm8    (V5+DQ
__mmask8 _mm512_fpclass_pd_mask(__m512d a, int imm8);
__mmask8 _mm512_mask_fpclass_pd_mask(__mmask8 k2, __m512d a, int imm8);


For each double, if (1) belongs to one of the classes specified in imm8, set 1, else set 0, to the corresponding bit of (2).
If k2 bit is 0, the corresponding bit of (2) is cleared. Upper bits of (2) are zeroed.

imm8

bit 7 SNaN
bit 6 negative finity
bit 5 denormal
bit 4 negative infinity
bit 3 positive infinity
bit 2 negative zero
bit 1 positive zero
bit 0 QNaN

x86/x64 SIMD Instruction List  Feedback