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Please note that the recommended version of Scilab is 6.0.1. This page might be outdated.
See the recommended documentation of this function

Scilab help >> Elementary Functions > Complex > isreal

isreal

check if a variable has real or complex entries

Calling Sequence

t=isreal(x)
t=isreal(x,eps)

Arguments

x

vector or matrix with floating point entries or coefficients

t

a boolean

Description

isreal(x) returns true if x is stored as a real variable and false if x is stored with an (eventually zero) imaginary part.

isreal(x,eps) returns true if x is stored as a real variable or if maximum absolute value of imaginary floating points is less or equal than eps.

Examples

isreal([1 2])
isreal(1+0*%i)
isreal(1+0*%i,0)
isreal(1+%s)
isreal(sprand(3,3,0.1))
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Last updated:
Mon Oct 01 17:34:40 CEST 2012