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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) -> 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()
 
 
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.
stdlib 2.2 Ericsson AB