_mm_getexp_pd
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
Instruction
VGETEXPPD xmm, xmm
Synopsis
_mm_getexp_pd(__m128d a);
Description
Convert the exponent of each packed double-precision (64-bit) floating-point element in "a" to a double-precision (64-bit) floating-point number representing the integer exponent, and store the results in "dst". This intrinsic essentially calculates "floor(log2(x))" for each element.
Operation
FOR j := 0 to 1
i := j*64
dst[i+63:i] := ConvertExpFP64(a[i+63:i])
ENDFOR
dst[MAX:128] := 0