# Difference between revisions of "Unary operations"

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− | == | + | ==unary minus== |

Unary minus. Returns the intensity field of the input object multiplied by -1, i.e. <code>wout = -1 * win</code>. | Unary minus. Returns the intensity field of the input object multiplied by -1, i.e. <code>wout = -1 * win</code>. |

## Revision as of 16:32, 24 January 2019

A unary operation is one that is performed on a single object, with no additional inputs. A single object is returned.

## Contents

## unary plus

Unary plus. Returns the input object `win`

with no modification.

wout = +win

Equivalent to

wout = uplus(win);

## unary minus

Unary minus. Returns the intensity field of the input object multiplied by -1, i.e. `wout = -1 * win`

.

wout = -win

Equivalent to

wout = uplus(win);

## Trigonometric and hyperbolic functions

With the form

wout = function(win)

where `function`

is any of the following, trigonometric or hyperbolic operations may be performed on dnd or sqw objects.

- acos - arc cosine
- acosh - arc cosh
- acot - arc cot
- acoth - arc coth
- acsc - arc cosec
- acsch - arc cosech
- asec - arc sec
- asech - arc sech
- asin - arc sine
- asinh - arc sinh
- atan - arc tangent
- atanh - arc tanh
- cos - cosine
- cosh - cosh
- cot - cot
- coth - coth
- csc - cosec
- csch - cosech
- sec - sec
- sech - sech
- sin - sine
- sinh - sinh
- tan - tangent
- tanh - tanh

## Other mathematical functions

Using the same syntax as above, one can perform the following operations:

- exp - exponential, i.e.
`wout = exp(win)`

- log - natural logarithm
- log10 - logarithm base 10