std::intrinsics

Function fmuladdf32

source
pub unsafe extern "rust-intrinsic" fn fmuladdf32(
    a: f32,
    b: f32,
    c: f32,
) -> f32
🔬This is a nightly-only experimental API. (core_intrinsics)
Expand description

Returns a * b + c for f32 values, non-deterministically executing either a fused multiply-add or two operations with rounding of the intermediate result.

The operation is fused if the code generator determines that target instruction set has support for a fused operation, and that the fused operation is more efficient than the equivalent, separate pair of mul and add instructions. It is unspecified whether or not a fused operation is selected, and that may depend on optimization level and context, for example.