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VFMULCPH

Multiplies converted half-precision floating-point values. The instruction converts the half-precision floating-point operands to single-precision floating-point format, performs the multiplication, and then converts the result back to half-precision floating-point format.

The following table covers the supported sources and destinations:

DO NOT support LOCK

The instruction is available only in 64-bit mode. It requires the AVX-512 FP16 extension.

The result is rounded according to the rounding mode specified in the MXCSR register. If the converted result cannot be represented as a half-precision floating-point number, it MAY result in #O or #U. Precision loss during the conversion from single-precision back to half-precision SHALL trigger #P.