tests if a string represents a number
res = csv_isnum(str)
A character string or a matrix of character strings.
A boolean matrix.
res = csv_isnum(str)returns %T if str represents a number.
csv_isnum is faster than default scilab function isnum
csv_isnum
tic(); isnum(string(ones(100, 100))); toc() tic(); csv_isnum(string(ones(100, 100))); toc()
csv_isnum(['1' , .. '-1.23' , .. 'Me', .. '1d+23' , .. '%pi'])