eva
calculator REPL with arbitrary precision
TLDR
Calculate expression
$ eva "[2 + 3 * 4]"
Use variables$ eva "[x = 5]" "[x * 2]"
Calculate with functions$ eva "[sin(pi/2)]"
Convert units$ eva "[100km to miles]"
Interactive mode$ eva
High precision$ eva --precision [50] "[pi]"
SYNOPSIS
eva [options] [expressions...]
DESCRIPTION
eva is a calculator REPL and CLI for evaluating mathematical expressions. It supports variables, functions, unit conversions, and arbitrary precision arithmetic.
The tool handles standard arithmetic, trigonometric functions, logarithms, and constants like pi and e. Variables persist across expressions in interactive mode.
eva provides a quick command-line calculator with more features than basic shell arithmetic.
PARAMETERS
EXPRESSIONS
Mathematical expressions to evaluate.--precision N
Decimal precision.--base N
Number base for output.--deg
Use degrees for trig functions.--help
Display help information.
CAVEATS
Complex expressions may need quoting. Unit conversion support varies. Interactive mode needed for variables to persist.
HISTORY
eva was created as a modern command-line calculator, providing an alternative to bc and similar tools with a more intuitive syntax and additional features.