stdlib v3.15.2

math (stdlib v3.15.2)

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

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

Limitations

As these are the C library, the same limitations apply.

Link to this section Summary

Functions

acos/1

A collection of mathematical functions that return floats. Arguments are numbers.

acosh/1
asin/1
asinh/1
atan/1
atan2/2
atanh/1
ceil/1
cos/1
cosh/1
erf/1

Returns the error function of X, where

erfc/1

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

exp/1
floor/1
fmod/2
log/1
log10/1
log2/1
pi/0

A useful number.

pow/2
sin/1
sinh/1
sqrt/1
tan/1
tanh/1

Link to this section Functions

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acos/1

(since OTP 18.0,OTP 20.0)

Specs

acos(X) -> float() when X :: number().

A collection of mathematical functions that return floats. Arguments are numbers.

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acosh/1

(since OTP 18.0,OTP 20.0)

Specs

acosh(X) -> float() when X :: number().
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asin/1

(since OTP 18.0,OTP 20.0)

Specs

asin(X) -> float() when X :: number().
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asinh/1

(since OTP 18.0,OTP 20.0)

Specs

asinh(X) -> float() when X :: number().
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atan/1

(since OTP 18.0,OTP 20.0)

Specs

atan(X) -> float() when X :: number().
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atan2/2

(since OTP 18.0,OTP 20.0)

Specs

atan2(Y, X) -> float() when Y :: number(), X :: number().
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atanh/1

(since OTP 18.0,OTP 20.0)

Specs

atanh(X) -> float() when X :: number().
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ceil/1

(since OTP 18.0,OTP 20.0)

Specs

ceil(X) -> float() when X :: number().
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cos/1

(since OTP 18.0,OTP 20.0)

Specs

cos(X) -> float() when X :: number().
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cosh/1

(since OTP 18.0,OTP 20.0)

Specs

cosh(X) -> float() when X :: number().
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erf/1

Specs

erf(X) -> float() when X :: number().

Returns the error function of X, where:

erf(X) = 2/sqrt(pi)*integral from 0 to X of exp(-t*t) dt.
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erfc/1

Specs

erfc(X) -> float() when X :: number().

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

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exp/1

(since OTP 18.0,OTP 20.0)

Specs

exp(X) -> float() when X :: number().
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floor/1

(since OTP 18.0,OTP 20.0)

Specs

floor(X) -> float() when X :: number().
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fmod/2

(since OTP 18.0,OTP 20.0)

Specs

fmod(X, Y) -> float() when X :: number(), Y :: number().
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log/1

(since OTP 18.0,OTP 20.0)

Specs

log(X) -> float() when X :: number().
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log10/1

(since OTP 18.0,OTP 20.0)

Specs

log10(X) -> float() when X :: number().
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log2/1

(since OTP 18.0,OTP 20.0)

Specs

log2(X) -> float() when X :: number().
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pi/0

Specs

pi() -> float().

A useful number.

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pow/2

(since OTP 18.0,OTP 20.0)

Specs

pow(X, Y) -> float() when X :: number(), Y :: number().
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sin/1

(since OTP 18.0,OTP 20.0)

Specs

sin(X) -> float() when X :: number().
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sinh/1

(since OTP 18.0,OTP 20.0)

Specs

sinh(X) -> float() when X :: number().
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sqrt/1

(since OTP 18.0,OTP 20.0)

Specs

sqrt(X) -> float() when X :: number().
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tan/1

(since OTP 18.0,OTP 20.0)

Specs

tan(X) -> float() when X :: number().
Link to this function

tanh/1

(since OTP 18.0,OTP 20.0)

Specs

tanh(X) -> float() when X :: number().