25.5.6 Converting real numbers to strings
The format
command converts a real number to a string.
-
format takes two arguments:
-
r, a real number.
- str, a string used for formatting.
- format(str) returns r
as a string with the requested formatting.
The formatting string can be one of the following:
-
f (for floating-point format) followed by the number
of digits to put after the decimal point.
- s (for scientific format) followed by the
number of significant digits.
- e (for engineering format) followed by the
number of digits to put after the decimal point, with one digit
before the decimal points.
Examples
format(sqrt(2)*10^10,"f13") |
|
“14142135623.7308959960938”
| | | | | | | | | | |
|
format(sqrt(2)*10^10,"s13") |
format(sqrt(2)*10^10,"e13") |