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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.
stdlib 1.18.1 Ericsson AB