calc

C-style arbitrary precision calculator.

Runs as calc|macOS, Linux|github.com

Command form

ai-draft · 3 tasks · 7 fields

Evaluate calc expressions given on the command line, optionally dropping into interactive mode. Debug flags, modes and shell-script mode are left out.

Opens the form; the finished command lands at your prompt, unrun

Run in Otty

otty gui calc

Evaluate expressionExample values, fixed in this page — nothing here reaches a terminal

Basic

Expression*

string

Advanced

No opening title

-d

Skip startup scripts

-q

TasksEach one presets the form for one job

Evaluate expression

expressionno_titleno_startup

Interactive session

interactiveno_startup

Show version

version

ParametersOnly these flags are editable in the form

Stay interactive

Drop into interactive mode after the expressions are evaluated.
boolean

-i

No opening title

boolean

-d

Skip startup scripts

boolean

-q

Pipe mode

No prompt, no header; suited for piping the result onward.
boolean

-p

Treat arguments as strings

Do not evaluate the arguments; expose them to argv().
boolean

-s

Print version

boolean

-v

Expression

calc expression to evaluate, for example 2^100.
string · positional 0 · repeatable

SourcesEvery flag above is checked against these

man

.RB [ \-c ] .RB [ \-d ] .RB [ \-e ] .RB [ \-i ] .RB [ \-p ] .RB [ \-q ] .RB [ \-s ] .RB [ \-u ] .RB [ \-v ] .B \-d Disable the printing of the opening title. .B \-e Ignore any environment variables on startup. .B \-i Become interactive if possible. .B \-p Pipe processing is enabled by use of .B \-q Disable the reading of the startup scripts. .B \-s By defaul…

manualHEAD 2026-10-27

raw.githubusercontent.com

Before it fills your prompt, Otty checks the installed calc against its version. A form that does not match your version is not offered.