VCMPUNORD_SPD - CoMPare UNORDered Signal Packed Double

VCMPUNORD_SPD xmm1, xmm2, xmm3/m128    (V1
__m128d _mm_cmp_pd(__m128d a, __m128d b, _CMP_UNORD_S)

For each double, if either or both of (1)(2) is NaN, set 1, else set 0, to all bits of the corresponding double of (3).
VCMPUNORD_SPD ymm1, ymm2, ymm3/m256    (V1
__m256d _mm256_cmp_pd(__m256d a, __m256d b, _CMP_UNORD_S)

For each double, if either or both of (1)(2) is NaN, set 1, else set 0, to all bits of the corresponding double of (3).
VCMPUNORD_SPD k1{k2}, xmm2, xmm3/m128/m64bcst    (V5+VL
__mmask8 _mm_cmp_pd_mask(__m128d a, __m128d b, _CMP_UNORD_S)
__mmask8 _mm_mask_cmp_pd_mask(__mmask8 k2, __m128d a, __m128d b, _CMP_UNORD_S)

For each double, if either or both of (1)(2) is NaN, set 1, else set 0, to the corresponding bit of (3).
If k2 bit is 0, the comparison is not done and the corresponding bit of (3) is set to zero. Upper bits of (3) are zero cleared.
VCMPUNORD_SPD k1{k2}, ymm2, ymm3/m256/m64bcst    (V5+VL
__mmask8 _mm256_cmp_pd_mask(__m256d a, __m256d b, _CMP_UNORD_S)
__mmask8 _mm256_mask_cmp_pd_mask(__mmask8 k2, __m256d a, __m256d b, _CMP_UNORD_S)

For each double, if either or both of (1)(2) is NaN, set 1, else set 0, to the corresponding bit of (3).
If k2 bit is 0, the comparison is not done and the corresponding bit of (3) is set to zero. Upper bits of (3) are zero cleared.
VCMPUNORD_SPD k1{k2}, zmm2, zmm3/m512/m64bcst{sae}    (V5
__mmask8 _mm512_cmp_pd_mask(__m512d a, __m512d b, _CMP_UNORD_S)
__mmask8 _mm512_mask_cmp_pd_mask(__mmask8 k2, __m512d a, __m512d b, _CMP_UNORD_S)
__mmask8 _mm512_cmp_round_pd_mask(__m512d a, __m512d b, _CMP_UNORD_S, int sae)
__mmask8 _mm512_mask_cmp_round_pd_mask(__mmask8 k2, __m512d a, __m512d b, _CMP_UNORD_S, int sae)

For each double, if either or both of (1)(2) is NaN, set 1, else set 0, to the corresponding bit of (3).
If k2 bit is 0, the comparison is not done and the corresponding bit of (3) is set to zero. Upper bits of (3) are zero cleared.
This instruction is:
Unordered - If either or both of source operands is NaN, condition met.
Signaling - Exception on QNaN
VCMPPD instrucion imm8 value = 13h
x86/x64 SIMD Instruction List  Feedback