Module math 

Floating-point primitives routed to std or libm.

Routing every transcendental call through this module lets the crate build as no_std: with default-features = false, features = ["libm"] the same code links against pure-Rust libm.

Public because the rule applies to the whole crate family: magnetic models and estimators call these and thereby build for bare metal and produce the same results on every target. Also provides the conversions and guarded casts numeric code needs.

Constants

RELATIVE_TOLERANCE

Relative tolerance for comparing computed results.

Functions

abs

Absolute value.

acos

Arccosine in [0, π]; NaN outside [-1, 1].

asin

Arcsine in [-π/2, π/2]; NaN outside [-1, 1].

atan

Arctangent in [-π/2, π/2].

atan2

Four-quadrant arctangent of y / x, in [-π, π].

ceil

Ceiling.

copysign

magnitude with the sign of sign.

cos

Cosine, radians.

count_to_f64

Count as f64. Counts here are far below 2^53, so the conversion is exact.

exp

eˣ.

hypot

√(x² + y²) without intermediate overflow.

is_effectively_zero

Whether a value is zero relative to scale, the magnitude of its operands.

is_integral

Whether a value is an integer.

ln

Natural logarithm; NaN for negative input, -∞ for zero.

round

Round to nearest, halves away from zero.

round_to_i32

Rounds a value known to be within i32 range. Callers pass angles bounded by 360.

sin

Sine, radians.

sqrt

Square root; NaN for negative input.

tan

Tangent, radians.

to_degrees

Radians to degrees.

to_radians

Degrees to radians.

to_usize

Truncates a small non-negative value to usize. Callers bound it first; out-of-range input yields zero.

trunc

Truncate towards zero.