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apifun_checksquare

Generates an error if the variable is not a square matrix.

Calling Sequence

errmsg=apifun_checksquare(funname,var,varname,ivar)

Parameters

funname :

a 1-by-1 matrix of strings, the name of the calling function.

var :

a 1-by-1 matrix of valid Scilab data type, the variable

varname :

a 1-by-1 matrix of string, the name of the variable

ivar :

a 1-by-1 matrix of floating point integers, the index of the input argument in the calling sequence

errmsg :

a 1-by-1 matrix of strings, the error message. If there was no error, the error message is the empty matrix.

Description

This function is designed to be used to design functions where the input argument is a square matrix. This function cannot be use when var is a function, or more generally, for any input argument for which the size function does not work.

Examples

// The function takes a 2 x 3 matrix of doubles.
function y=myfunction(x)
apifun_checksquare ( "myfunction",x,"x",1 )
y = x
endfunction
// Calling sequences which work
y = myfunction ( ones(2,2) )
y = myfunction ( zeros(3,3) )
// Calling sequences which generate an error
y = myfunction ( ones(1,3) )
y = myfunction ( zeros(2,4) )

Authors


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