User Commands - compute (1)
NAME
compute(1f) - [MATH] evaluate a calculator expression (LICENSE:PD)
CONTENTS
Synopsis
Description
Options
Examples
See also
Author
License
SYNOPSIS
compute [[STRING] [--trail FILENAME] [ --verbose]]|[ --help|--version]
DESCRIPTION
Given any expression call the CALCULATOR(3f) calculator function and evaluate it. If no expression is present on the command line, read expressions from stdin until a line composed of a period(".") or end of data is encountered.Expressions are similar to Fortran77 syntax except powers are processed from left to right, and string variable names start with a dollar-sign, and all numeric values are assumed to be DOUBLEPRECISION.
OPTIONS
STRING calculator expression to evaluate --trail FILENAME record actions on a trail file. --verbose echo the input as well as the computed values --help display this help and exit --version output version information and exit
EXAMPLES
Sample commands:
$ compute ’(sin(30.33333)*2)**2+40.0/2.3-1.23e3’ $ compute funcs|more$ compute --trail record.txt a=10 # The redo(3f) command is used for command recall and history # by entering an exclamation on a line by itself or by following # the exclamation by a space and an optional initial command for # redo(3f). Enter "?" at the redo(3f) prompt for help using the # command line history editor.
# enter a long calculation b=sin(a)**2+3.4e2+100-11*2/55.6 # use redo(3f) to change "sin" to "cos". Enter return to execute # the changed line ! c/sin/cos
# system commands can be called if prefixed by exclamation !ls
# exit using a period on a line by itself .
# a simple non-nesting alternate input file can be read <myfile
funcs # list available functions dump # list current variables
SEE ALSO
See the man(1) page for M_calculator(3fm) for a more detailed description of the CALCULATOR(3f) routine.
AUTHOR
John S. Urban
LICENSE
Public License
| Nemo Release 3.1 | compute (1) | February 23, 2025 |
