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math(3erl)						     Erlang Module Definition							math(3erl)

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)
       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.

Ericsson AB							   stdlib 1.17.3							math(3erl)