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## fmuladdf64

# Function fmuladdf64

Source

    pub const fn fmuladdf64(a: f64, b: f64, c: f64) -> f64

🔬This is a nightly-only experimental API. (`core_intrinsics`)
Expand description

Returns `a * b + c` for `f64` 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.