Programmer Guide/Command Reference/EVAL/sign: Difference between revisions

Latest revision as of 11:50, 21 April 2011

Compute the sign of the argument.

Usage

sign(x)

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

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:{{SUBPAGENAME}}}}
-=====sign=====
+Compute the sign of the argument.
+;Usage: <code>sign(<var>x</var>)</code>
+:;<var>x</var>: a scalar, vector or matrix
+;Result: The result ''r'' has the same type as the argument ''x''.
+::<code>''r''[''i'',''j''] is set to 1 if ''x''[''i'',''j'']&ge;0 and to -1 if ''x''[''i'',''j'']<0</code>
+;See also: [[../int|int]], [[../round|round]], [[../floor|floor]]
-The sign of <var>x</var> (1 for <var>x</var>>=0, -1 for <var>x</var> < 0)
+[[../#Functions|<function list>]]
-=====Usage:=====
-<code>sign(<var>x</var>)</code>