rst_eval

Syntax

rst_eval --help
rst_eval [-c cast] [-f format] expr

Synopsis

Evaluate a mathematical expression.

Options

`--help`	print the help message and exit.
`--version`	print the RST version number and exit.
`-c cast`	force the final calculated value of the expression to be cast data type.
`-f format`	use the string format to format the output text. The string uses the printf syntax.
`expr`	the mathematical expression to evaluate.

Description

Evaluate a mathematical expression.

The calculated value is written to standard output

The expression to evaluate should be quoted.

Examples

rst_eval "2.5*3.12/6"

Evaluate 2.5*3.12/6.

rst_eval -c int -f "%d" "2.3*0.5"

Evaluate 2.3*0.5, convert the result to an integer and print it using the format "%d".