NAME
    StrToLong -- string to long value (decimal) (V36)

SYNOPSIS
    characters = StrToLong(string,value)
    D0                       D1    D2

    LONG StrToLong(STRPTR, LONG *)

FUNCTION
    Converts decimal string into LONG value.  Returns number of characters
    converted.  Skips over leading spaces & tabs (included in count).  If
    no decimal digits are found (after skipping leading spaces & tabs),
    StrToLong returns -1 for characters converted, and puts 0 into value.

INPUTS
    string - Input string.
    value  - Pointer to long value.  Set to 0 if no digits are converted.

RESULT
    result - Number of characters converted or -1.