Constant gramit::fp::EQ_THRESHOLD_F32

pub const EQ_THRESHOLD_F32: f32

The default threshold for approximate equality for f32s.

This value is based on (but larger than) the host system's machine epsilon for 32-bit floating point numbers.

The machine epsilon is an upper bound on the relative rounding error incurred by a single arithmetic operation. In contrast, EQ_THRESHOLD_F32 is intended to provide an upper bound on the absolute error incurred by a moderate-length series of operations, and so is several times the machine epsilon.

For very long, iterative, or recursive calculations, or calculations that involve very large numbers, this bound may be too tight. For such cases, ApproxEq provides the within_threshold method to allow users to provide a more appropriate bound.

See the ApproxEq trait for further information.