Scilab 5.4.0
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- Strings
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- isalphanum
- isascii
- isdigit
- isletter
- isnum
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Please note that the recommended version of Scilab is 2025.0.0. This page might be outdated.
See the recommended documentation of this function
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
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