Module ops

This mod re-exports the correct versions of floating-point operations with unspecified precision in the standard library depending on whether the libm crate feature is enabled.

All the functions here are named according to their versions in the standard library.

It also provides no_std compatible alternatives to certain floating-point operations which are not provided in the core library.

Traits

FloatPow

This extension trait covers shortfall in determinacy from the lack of a libm counterpart to f32::powi. Use this for the common small exponents.

Functions

absstd

Computes the absolute value of x.

acoslibm, or nostd-libm and non-std

Computes the arccosine of a number. Return value is in radians in Hyperbolic tangent function.

acoshlibm, or nostd-libm and non-std

Inverse hyperbolic cosine function.

asinlibm, or nostd-libm and non-std

Computes the arcsine of a number. Return value is in radians in the range [-pi/2, pi/2] or NaN if the number is outside the range [-1, 1].

asinhlibm, or nostd-libm and non-std

Inverse hyperbolic sine function.

atanlibm, or nostd-libm and non-std

Computes the arctangent of a number. Return value is in radians in the range [-pi/2, pi/2];

atan2libm, or nostd-libm and non-std

Computes the four-quadrant arctangent of y and x in radians.

atanhlibm, or nostd-libm and non-std

Inverse hyperbolic tangent function.

cbrtlibm, or nostd-libm and non-std

Returns the cube root of a number.

ceilstd

Returns the smallest integer greater than or equal to x.

copysignstd

Returns a number composed of the magnitude of x and the sign of y.

coslibm, or nostd-libm and non-std

Computes the cosine of a number (in radians).

coshlibm, or nostd-libm and non-std

Hyperbolic cosine function.

explibm, or nostd-libm and non-std

Returns e^(self), (the exponential function).

exp2libm, or nostd-libm and non-std

Returns 2^(self).

exp_m1libm, or nostd-libm and non-std

Returns e^(self) - 1 in a way that is accurate even if the number is close to zero.

floorstd

Returns the largest integer less than or equal to x.

fractstd

Returns the fractional part of x.

hypotlibm, or nostd-libm and non-std

Compute the distance between the origin and a point (x, y) on the Euclidean plane.

lnlibm, or nostd-libm and non-std

Returns the natural logarithm of the number.

ln_1plibm, or nostd-libm and non-std

Returns ln(1+n) (natural logarithm) more accurately than if the operations were performed separately.

log2libm, or nostd-libm and non-std

Returns the base 2 logarithm of the number.

log10libm, or nostd-libm and non-std

Returns the base 10 logarithm of the number.

powflibm, or nostd-libm and non-std

Raises a number to a floating point power.

rem_euclidstd

Calculates the least nonnegative remainder of x (mod y).

roundstd

Returns the nearest integer to x. If a value is half-way between two integers, round away from 0.0.

sinlibm, or nostd-libm and non-std

Computes the sine of a number (in radians).

sin_coslibm, or nostd-libm and non-std

Simultaneously computes the sine and cosine of the number, x. Returns (sin(x), cos(x)).

sinhlibm, or nostd-libm and non-std

Hyperbolic sine function.

sqrtstd

Returns the square root of a number.

tanlibm, or nostd-libm and non-std

Computes the tangent of a number (in radians).

tanhlibm, or nostd-libm and non-std

Hyperbolic tangent function.