math(3)

NAME
math - Mathematical Functions

DESCRIPTION

This module provides an interface to a number of mathematical functions.

    Note:
Not all functions are implemented on all platforms. In particular, the erf/1 and erfc/1 functions are not implemented on Windows.

EXPORTS

pi() -> float()

    A useful number.

sin(X) -> float()
cos(X) -> float()
tan(X) -> float()
asin(X) -> float()
acos(X) -> float()
atan(X) -> float()
atan2(Y, X) -> float()
sinh(X) -> float()
cosh(X) -> float()
tanh(X) -> float()
asinh(X) -> float()
acosh(X) -> float()
atanh(X) -> float()
exp(X) -> float()
log(X) -> float()
log2(X) -> float()
log10(X) -> float()
pow(X, Y) -> float()
sqrt(X) -> float()

    Types:
        Y = X = number()

    A collection of math functions which return floats. Arguments are numbers.

erf(X) -> float()

    Types:
        X = number()

    Returns the error function of X, where

    erf(X) = 2/sqrt(pi)*integral from 0 to X of exp(-t*t) dt.

erfc(X) -> float()

    Types:
        X = number()

    erfc(X) returns 1.0 - erf(X), computed by methods that avoid cancellation for large X.

BUGS

As these are the C library, the bugs are the same.