format >>format++>< +(before++)+ +,+++++ +after+ +,+++++ +expp+ +,expt+ Returns a copy of the receiving string, a number, rounded and formatted. The number is first rounded according to standard Rexx rules, as though
the operation The [before] and [after] options describe how many characters are to be used for the integer and decimal parts of the result. If you omit either or both of them, the number of characters for that part is as needed. If
[before]
is not large enough to
contain the integer part of the
number (plus the sign for a negative number), an error results. If
[before]
is larger than needed for that part,
the number is padded on the left with blanks. If
[after]
is not the same size as the decimal
part of the number, the number is rounded (or extended with zeros) to fit.
Specifying String class  format method "3"~format(4) > " 3" "1.73"~format(4,0) > " 2" "1.73"~format(4,3) > " 1.730" ".76"~format(4,1) > " 0.8" "3.03"~format(4) > " 3.03" "  12.73"~format(,4) > "12.7300" "  12.73"~format > "12.73" "0.000"~format > "0" [expp] and [expt] control the exponent part of the result, which, by default, is formatted according to the current NUMERIC settings of DIGITS and FORM. [expp] sets the number of places for the exponent part; the default is to use as many as needed (which can be zero). [expt] specifies when the exponential expression is used. The default is the current setting of NUMERIC DIGITS. If
[expp]
is
If the number of places needed for the integer or decimal part exceeds
[expt]
or twice
[expt]
, respectively, exponential notation is
used. If
[expt]
is
String class  format method "12345.73"~format(, ,2,2) > "1.234573E+04" "12345.73"~format(,3, ,0) > "1.235E+4" "1.234573"~format(,3, ,0) > "1.235" "12345.73"~format(, ,3,6) > "12345.73" "1234567e5"~format(,3,0) > "123456700000.000"
