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Scilab help >> Strings > 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
<< isletter Strings justify >>

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Last updated:
Wed Oct 05 12:10:01 CEST 2011