Programmer Guide/Command Reference/EVAL/sign: Difference between revisions
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:;<var>x</var>: a scalar, vector or matrix | :;<var>x</var>: a scalar, vector or matrix | ||
;Result: The result ''r'' has the same type as the argument ''x''. | ;Result: The result ''r'' has the same type as the argument ''x''. | ||
::<code>'' | ::<code>''r''[''i'',''j''] is set to 1 if ''x''[''i'',''j'']>=0 and to -1 if ''x''[''i'',''j'']>=0</code> | ||
;See also: [[Programmer_Guide/Command_Reference/EVAL/int|int]], [[Programmer_Guide/Command_Reference/EVAL/round|round]], [[Programmer_Guide/Command_Reference/EVAL/floor|floor]] | ;See also: [[Programmer_Guide/Command_Reference/EVAL/int|int]], [[Programmer_Guide/Command_Reference/EVAL/round|round]], [[Programmer_Guide/Command_Reference/EVAL/floor|floor]] | ||
[[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]] | [[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]] | ||
Revision as of 11:56, 4 April 2011
Compute the sign.
- Usage
sign(x)- x
- a scalar, vector or matrix
- Result
- The result r has the same type as the argument x.
r[i,j] is set to 1 if x[i,j]>=0 and to -1 if x[i,j]>=0
