英和和英

名詞

writemask (plural writemasks)

1. (programming) A bitmask which controls which bits are written to a memory location during some operation.
   • 2025 March, Intel 64 and IA-32 Architectures Software Developer's Manual‎, volume 1, page 15-9:

     A destination element is not updated with the result of the operation if the corresponding writemask bit is not set. Instead, the destination element value must be preserved (merging-masking) or it must be zeroed out (zeroing-masking).