@to_num(string)
convert a string into a numeric value (integer or float, following the
most appropriate). Value <undef>
is returned if the string
cannot be converted. If the represented numeric is out of range, an
error message is emitted.
See also String Related Functions @car, @cdr, @char_is_alnum, @char_is_alpha, @char_is_ascii, @char_is_blank, @char_is_cntrl, @char_is_digit, @char_is_graph, @char_is_lower, @char_is_print, @char_is_punct, @char_is_space, @char_is_upper, @char_is_xdigit, @copy, @count, @drop, @dump, @dumpvar, @empty, @explode, @find, @is_prefix, @is_string, @is_subsequence, @is_suffix, @last, @member, @occurs, @permute, @push_back, @r_findall, @r_match, @r_search, [@regexp], @remove, @remove_duplicate, @replace, @scramble, @slice, @sort, @sputter, @string2fun, @stutter, @string2proc, @system, @take @to_num, @Tracing, @UnTracing