_mm256_logb_pd
Classification
SVML, Elementary Math Functions, CPUID Test: AVX
Header File
immintrin.h
Synopsis
 _mm256_logb_pd(__m256d a);
Description
Convert the exponent of each packed double-precision (64-bit) floating-point element in "a" to a double-precision 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 3
	i := j*64
	dst[i+63:i] := ConvertExpFP64(a[i+63:i])
ENDFOR
dst[MAX:256] := 0