Function _mm_fpclass_ss_mask 

pub fn _mm_fpclass_ss_mask(a: __m128, const IMM8: i32) -> __mmask8

Available on x86-64 and target feature avx512dq only.

Test the lower single-precision (32-bit) floating-point element 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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