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.\" Hey, EMACS: -*- nroff -*-
.\" First parameter, NAME, should be all caps
.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
.\" other parameters are allowed: see man(7), man(1)
.TH GIAC 1 "2014-4-6"
.\" Please adjust this date whenever revising the manpage.
.\"
.\" Some roff macros, for reference:
.\" .nh disable hyphenation
.\" .hy enable hyphenation
.\" .ad l left justify
.\" .ad b justify to both left and right margins
.\" .nf disable filling
.\" .fi enable filling
.\" .br insert line break
.\" .sp <n> insert n+1 empty lines
.\" for manpage-specific macros, see man(7)
.SH NAME
giac \- computer algebra system
.SH SYNOPSIS
.B giac
.RI [ options ] " files"
.br
.B icas
.RI [ options ] " files"
.br
.B xcas
.RI " files"
.br
.B cas_help
.RI " keyword"
.SH DESCRIPTION
.PP
.\" TeX users may be more comfortable with the \fB<whatever>\fP and
.\" \fI<whatever>\fP escape sequences to invode bold face and italics,
.\" respectively.
\fBgiac\fP is an advanced symbolic and numeric calculator by
Bernard Parisse. The console interface is named
.B icas
or equivalently
.B giac
.
The corresponding GUI program is called
.B xcas.
These programs has extensive html documentation; One can also obtain some
help about a keyword like this:
.br
.P
.IR
.br
0>> ?gcd
.br
Returns the greatest common divisor of 2 polynomials of several variables
or of 2 integers or of 2 rationals.
.br
(Intg(a) or Poly),(Intg(b) or Poly)
.br
gcd(45,75);gcd(15/7,50/9);gcd(x^2-2*x+1,x^3-1);gcd(t^2-2*t+1,t^2+t-2);
.br
gcd((x^2-1)*(y^2-1)*z^2,x^3*y^3*z+(-(y^3))*z+x^3*z-z)
.br
lcm,euler,modgcd,ezgcd,psrgcd,heugcd,Gcd
.br
.SH OPTIONS
.TP
.B \-\-version
Show version of program.
.TP
.B \-\-texmacs
To call giac/icas from Texmacs
.TP
.B \-\-emacs
To call giac/icas from Emacs
.TP
.B \-\-sage
To call giac from Sage
.SH SEE ALSO
The programs are documented fully by
.IR "GIAC/XCAS manual"
in html format in /usr/share/giac/doc.
.br
.br
.B
C++
programers will find some informations about the giac library in the
.I
info
manual.
.SH AUTHOR
Bernard Parisse. http://www-fourier.ujf-grenoble.fr/~parisse/giac.html
.SH LICENSE
GPLv3+
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