_mm512_i64extscatter_pd
Classification
KNC, Store, CPUID Test: KNCNI
Header File
Synopsis
_mm512_i64extscatter_pd(void * base_addr, __m512i vindex, __m512d a, _MM_DOWNCONV_PD_ENUM conv, int scale, int hint);
Description
Down-converts 8 packed double-precision (64-bit) floating-point elements in "a" using "conv" and stores them in memory locations starting at location "base_addr" at packed 64-bit integer indices stored in "vindex" scaled by "scale". "hint" indicates to the processor whether the data is non-temporal.
Operation
FOR j := 0 to 7
i := j*64
m := j*64
addr := base_addr + vindex[m+63:m] * ZeroExtend64(scale) * 8
CASE conv OF
_MM_DOWNCONV_EPI64_NONE: MEM[addr+63:addr] := a[i+63:i]
ESAC
ENDFOR