.\" ident @(#)isdigit.3
.\" Standard Template Library
.\" $$RW_INSERT_HEADER "slyrs.man"
.TH isdigit 3C++ "02 Apr 1998" "Rogue Wave Software" "-"
.ce2
Standard C++ Library   
Copyright 1998, Rogue Wave Software, Inc.   

.SH NAME

\f2isdigit\fP

\ - Determines if a character is a decimal digit. 



.SH  SYNOPSIS


.br
#include <locale>
.br

.br
template <class charT> 
.br
bool isdigit (charT c, const locale& loc) const;



.SH  DESCRIPTION


The isdigit_function returns \f2true\fP if the character passed as a parameter is a decimal digit. Otherwise the function returns \f2false\fP.   The check is made using the \f2ctype\fP facet from the locale parameter.



.SH  SEE ALSO


other_is_functions, locale, ctype