__maddld, __builtin_ppc_maddld

Purpose

Fixed-point Multiply-Add low doubleword.

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

Note: This built-in function is valid only when both of the following conditions are met:
  • The -mcpu option is set to target POWER9 processors or higher.
  • The compiler mode is 64-bit.

Prototype

signed long long __builtin_ppc_maddld (signed long long, signed long long, signed long long);

signed long long __maddld (signed long long, signed long long, signed long long);

Note:
  • The built-in function in the form of __name is a synonym of the built-in function in the form of __builtin_ppc_name.
  • The built-in function in the form of __name is provided for compatibility with IBM® XL C/C++ for AIX® 16.1.0 or earlier releases. This built-in function form might be deprecated in the future.