math(3)

MODULE
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)
cos(X)
tan(X)
asin(X)
acos(X)
atan(X)
atan2(Y, X)
sinh(X)
cosh(X)
tanh(X)
asinh(X)
acosh(X)
atanh(X)
exp(X)
log(X)
log10(X)
pow(X, Y)
sqrt(X)

    Types
        X = Y = 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.