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## _mm_fpclass_pd_mask

# Function _mm_fpclass_pd_mask

1.89.0 · Source

    pub fn _mm_fpclass_pd_mask(a: __m128d, const IMM8: i32) -> __mmask8

Available on x86-64 and target feature `avx512dq` and target feature `avx512vl` only.
Expand description

Test packed double-precision (64-bit) floating-point elements in a for special categories specified by imm8, and store the results in mask vector k. imm can be a combination of:

    - 0x01 // QNaN
    - 0x02 // Positive Zero
    - 0x04 // Negative Zero
    - 0x08 // Positive Infinity
    - 0x10 // Negative Infinity
    - 0x20 // Denormal
    - 0x40 // Negative
    - 0x80 // SNaN

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