Scilab Home page | Wiki | Bug tracker | Forge | Mailing list archives | ATOMS | File exchange
Please login or create an account
Change language to: English - Português - 日本語

Please note that the recommended version of Scilab is 6.0.0. This page might be outdated.
See the recommended documentation of this function

Aide Scilab >> Chaînes de caractères > isnum

isnum

tests if a string represents a number

Calling Sequence

res = isnum(str)

Arguments

str

A character string or a matrix of character strings.

res

A boolean matrix.

Description

res = isnum(str)returns %T if str represents a number

Examples

isnum(['1'     , ..
       '-1.23' , ..
       '+1e+23', .. 
       '1d+23' , ..
       '%pi'])

See Also

  • isletter — check that characters of a string are alphabetics letters
  • isdigit — check that characters of a string are digits between 0 and 9
  • isalphanum — check that characters of a string are alphanumerics

Authors

  • P.M
Scilab Enterprises
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Wed Oct 05 12:11:02 CEST 2011