This content has not been validated; it was AI-generated following the x86-64 ISA Documentation generation process to maintain high quality. However, as no human has verified this data, errors may exist. If the accuracy of this data is critical, please consult the Intel SDM. The model used to generate this is gemma4:31b
VADDPH
Adds packed signed 16-bit floating-point values from two sources and stores the result in a destination.
The following table covers what the source and destinations can be.
| source | destination(s) |
|---|---|
| xmm/ymm/zmm register | xmm/ymm/zmm register |
| m16 | xmm/ymm/zmm register |
DO NOT support LOCK
This instruction is available only in 64-bit mode or 32-bit mode. It is NOT supported in compatibility mode.
The instruction requires the AVX-512 F (Foundation) instruction set to be enabled. If the destination register is the same as one of the source registers, the operation is performed in-place.
To avoid unexpected behavior, ensure that the destination register is properly zero-extended if using YMM or ZMM registers to prevent leakage of stale data from the upper bits of the register. Results are subject to the floating-point control word (FCW) settings for rounding and precision.