MATHCALC(1) MATHCALC(1)
NAME
mathcalc - interface to a TclLib calculator module
SYNOPSIS
mathcalc
DESCRIPTION
Mathcalc reads simple expressions from the standard input,
evaluates them, and prints the results on the standard out-
put. It is a command line interface to a `TclLib' calcula-
tor module. It prompts the user (`calc%') for each line,
and exits on end-of-file or on reading a line containing
`quit'.
Values are either integer or floating-point constants. A
floating-point constant has a decimal point, an exponent, or
both. Integer constants are taken as hexadecimal if they
start 0x, octal if they start with 0, and otherwise deci-
mal.
Expressions are formed using the following C-like operators
and predefined functions, shown in order of decreasing pri-
ority:
- + ! ~
unary: negate, plus (no-op); logical not and one's com-
plement (integers only)
* / %
multiply and divide, integer remainder
+ - add, subtract
<< >>
left shift, right shift (integers only)
< <= >= >
relational operators
== !=
equality, inequality
& bit-wise and (integer only)
^ bit-wise exclusive-OR (integer only)
| bit-wise or (integer only)
&& logical and
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MATHCALC(1) MATHCALC(1)
|| logical or
a?b:c
conditional: if a is non-zero, the result is b, other-
wise c
Mathcalc provides the following mathematical functions:
abs ceil fmod sin
acos cos hypot sinh
asin cosh log sqrt
atan exp log10 tan
atan2 floor pow tanh
See math-elem(2) for the usual definitions.
SOURCE
/appl/cmd/mathcalc.b
/appl/lib/tcl_calc.b
DIAGNOSTICS
ARRG! bad constant syntax
Error! bad expression syntax, or any other error
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