# Difference between revisions of "SGN"

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imported>Cyperium m |
imported>Keybone m (Added missing comma, fixed wording of function description to make less ambiguous.) |
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− | * Returns -1 when a sign is negative, 0 when a value is zero or 1 when a value is positive. | + | * Returns -1 when a sign is negative, 0 when a value is zero, or 1 when a value is positive. |

− | * | + | * Function is used to store the original sign of a number. |

* '''QB64''' allows programs to return only [[_UNSIGNED]] variable values using a [[_DEFINE]] statement. | * '''QB64''' allows programs to return only [[_UNSIGNED]] variable values using a [[_DEFINE]] statement. | ||

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{{CodeStart}} | {{CodeStart}} | ||

n = -100 | n = -100 | ||

− | IF SGN(n) = -1 THEN n = {{Cl|ABS}}(n) | + | {{Cl|IF...THEN|IF}} {{Cl|SGN}}(n) = -1 THEN n = {{Cl|ABS}}(n) |

PRINT n '' '' | PRINT n '' '' | ||

{{CodeEnd}} | {{CodeEnd}} | ||

− | {{OutputStart}} | + | {{OutputStart}} 100 |

− | 100 | ||

{{OutputEnd}} | {{OutputEnd}} | ||

## Latest revision as of 02:36, 30 July 2019

The **SGN** function returns the sign of a number value.

## Syntax

- sign% = SGN(value)

- Returns -1 when a sign is negative, 0 when a value is zero, or 1 when a value is positive.
- Function is used to store the original sign of a number.
**QB64**allows programs to return only _UNSIGNED variable values using a _DEFINE statement.

*Example:* Checking and changing negative values to positive ones.

n = -100
IF SGN(n) = -1 THEN n = ABS(n)
PRINT n * *

100

*See also:*

*Navigation:*