ISNUM()

PURPOSE

Is the parameter a numeric

SYNONYM

None

SYNOPSIS

#include "dbapi.h"
 
int	ISNUM(order)
 
<input parameters>
int	order;		/* Placement in actual parameter list		*/
 
<output parameters>
none

DESCRIPTION

The function checks if the specified parameter is a numeric value. It returns 1 if true, or 0 if false. The order specifies the actual placements in the parameter list.

EXAMPLE

The following example returns .T. if the first parameter passed is a numeric value, or .F. otherwise.

Example Recital program:

m_value=534
m_isnum=check_num(m_value)
return

Example 'C' function:

#include "dbapi.h"
 
check_num()
{
    _retl( ISNUM(1) );
}

SEE ALSO

_parinfo(), _parinfo(), _parnd(), _parni(), parnl(), _retnd(), retni(), retl(), PCOUNT