Scilab Website | Contribute with GitLab | Mailing list archives | ATOMS toolboxes
Scilab Online Help
5.4.1 - Français

Change language to:
English - 日本語 - Português - Русский

Please note that the recommended version of Scilab is 2024.0.0. This page might be outdated.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' , ..
    'A'     , ..
    '%pi'])

See Also

  • isletter — check that characters of a string are alphabetic letters
  • isdigit — check that characters of a string are digits between 0 and 9
  • isalphanum — check that characters of a string are alphanumerics
Report an issue
<< isletter Chaînes de caractères justify >>

Copyright (c) 2022-2023 (Dassault Systèmes)
Copyright (c) 2017-2022 (ESI Group)
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Tue Apr 02 17:36:47 CEST 2013