__builtin_maddhd

Purpose

Fixed-point Multiply-Add signed high doubleword.

Multiplies the first two arguments, adds the third argument, and returns the high doubleword of the result.

This built-in function is valid only when -qarch(-mcpu) is set to utilize the POWER9™ technology.

signed long long __builtin_maddhd (signed long long, signed long long, signed long long);