X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginsh%2Fginsh.1;h=8eddcf6b37bd49c9603e850c363c32744b399f57;hp=69c378307ab3c024347e7920c2e63f1cd91eca05;hb=52fec0ff3ba58d05dcaa8401c972f7d9263217c7;hpb=5c0989497994b35faa9c17b18f936c21dbb22d78

diff --git a/ginsh/ginsh.1 b/ginsh/ginsh.1
index 69c37830..8eddcf6b 100644
--- a/ginsh/ginsh.1
+++ b/ginsh/ginsh.1
@@ -3,6 +3,7 @@
 ginsh \- GiNaC Interactive Shell
 .SH SYNPOSIS
 .B ginsh
+.RI [ file\&... ]
 .SH DESCRIPTION
 .B ginsh
 is an interactive frontend for the GiNaC symbolic computation framework.
@@ -24,12 +25,15 @@ mathematical operators like
 .BR + " and  " * ,
 and functions (e.g.
 .BR sin " or " normal ).
-ginsh will evaluate the expression and print the result to stdout. Every
-input expression must be terminated by a semicolon
-.RB ( ; ),
-and it is possible to enter multiple expressions on one line. Whitespace
-(spaces, tabs, newlines) can be applied freely between tokens. To quit ginsh,
-enter
+Every input expression must be terminated with either a semicolon
+.RB ( ; )
+or a colon
+.RB ( : ).
+If terminated with a semicolon, ginsh will evaluate the expression and print
+the result to stdout. If terminated with a colon, ginsh will only evaluate the
+expression but not print the result. It is possible to enter multiple
+expressions on one line. Whitespace (spaces, tabs, newlines) can be applied
+freely between tokens. To quit ginsh, enter
 .BR quit " or " exit ,
 or type an EOF (Ctrl-D) at the prompt.
 .SS NUMBERS
@@ -82,7 +86,7 @@ Catalan's Constant
 Euler-Mascheroni Constant
 .TP
 .B I
-(-1)^1/2
+sqrt(-1)
 .TP
 .B FAIL
 an object of the GiNaC "fail" class
@@ -107,6 +111,7 @@ expression.
 ginsh provides the following operators, listed in falling order of precedence:
 .RS
 .TP 8m
+\" GINSH_OP_HELP_START
 .B !
 postfix factorial
 .TP
@@ -154,6 +159,7 @@ not equal
 .TP
 .B =
 symbol assignment
+\" GINSH_OP_HELP_END
 .RE
 .PP
 All binary operators are left-associative, with the exception of
@@ -209,94 +215,130 @@ respective GiNaC methods of the same name, so I will not describe them in
 detail here. Please refer to the GiNaC documentation.
 .PP
 .RS
-.BI beta( expression ", " expression )
-.br
+\" GINSH_FCN_HELP_START
 .BI charpoly( matrix ", " symbol )
+\- characteristic polynomial of a matrix
 .br
 .BI coeff( expression ", " symbol ", " number )
+\- extracts coefficient of symbol^number from a polynomial
 .br
 .BI collect( expression ", " symbol )
+\- collects coefficients of like powers
 .br
 .BI content( expression ", " symbol )
+\- content part of a polynomial
 .br
 .BI degree( expression ", " symbol )
+\- degree of a polynomial
 .br
 .BI denom( expression )
+\- denominator of a rational function
 .br
 .BI determinant( matrix )
+\- determinant of a matrix
 .br
 .BI diag( expression... )
+\- constructs diagonal matrix
 .br
 .BI diff( expression ", " "symbol [" ", " number] )
+\- partial differentiation
 .br
 .BI divide( expression ", " expression )
+\- exact polynomial division
 .br
-.BI eval( "expression [" ", " number] )
+.BI eval( "expression [" ", " level] )
+\- evaluates an expression, replacing symbols by their assigned value
 .br
-.BI evalf( "expression [" ", " number] )
+.BI evalf( "expression [" ", " level] )
+\- evaluates an expression to a floating point number
 .br
 .BI expand( expression )
+\- expands an expression
 .br
 .BI gcd( expression ", " expression )
+\- greatest common divisor
 .br
 .BI has( expression ", " expression )
+\- returns "1" if the first expression contains the second as a subexpression, "0" otherwise
 .br
 .BI inverse( matrix )
+\- inverse of a matrix
 .br
 .BI is( relation )
-\- returns "1" if the
-.I relation
-is true, "0" otherwise (false or undecided)
+\- returns "1" if the relation is true, "0" otherwise (false or undecided)
 .br
 .BI lcm( expression ", " expression )
+\- least common multiple
 .br
 .BI lcoeff( expression ", " symbol )
+\- leading coefficient of a polynomial
 .br
 .BI ldegree( expression ", " symbol )
+\- low degree of a polynomial
 .br
-.BI lsolve( list ", " list )
+.BI lsolve( equation-list ", " symbol-list )
+\- solve system of linear equations
 .br
 .BI nops( expression )
+\- number of operands in expression
 .br
-.BI normal( "expression [" ", " number] )
+.BI normal( "expression [" ", " level] )
+\- rational function normalization
 .br
 .BI numer( expression )
+\- numerator of a rational function
 .br
 .BI op( expression ", " number )
+\- extract operand from expression
 .br
-.BI power( expression ", " expression )
+.BI power( expr1 ", " expr2 )
+\- exponentiation (equivalent to writing expr1^expr2)
 .br
 .BI prem( expression ", " expression ", " symbol )
+\- pseudo-remainder of polynomials
 .br
 .BI primpart( expression ", " symbol )
+\- primitive part of a polynomial
 .br
 .BI quo( expression ", " expression ", " symbol )
+\- quotient of polynomials
 .br
 .BI rem( expression ", " expression ", " symbol )
+\- remainder of polynomials
 .br
-.BI series( expression ", " "symbol [" ", " "number [" ", " number]] )
+.BI series( expression ", " "symbol [" ", " "point [" ", " order]] )
+\- series expansion
 .br
 .BI sqrfree( expression ", " symbol )
+\- square-free factorization of a polynomial
 .br
 .BI sqrt( expression )
+\- square root
 .br
 .BI subs( expression ", " relation-or-list )
 .br
-.BI subs( expression ", " list ", " list )
+.BI subs( expression ", " look-for-list ", " replace-by-list )
+\- substitute subexpressions
 .br
 .BI tcoeff( expression ", " symbol )
+\- trailing coefficient of a polynomial
 .br
 .BI time( expression )
-\- returns the time in seconds needed to evaluate the given
-.I expression
+\- returns the time in seconds needed to evaluate the given expression
 .br
 .BI trace( matrix )
+\- trace of a matrix
 .br
 .BI transpose( matrix )
+\- transpose of a matrix
 .br
 .BI unassign( symbol )
+\- unassign an assigned symbol
 .br
 .BI unit( expression ", " symbol )
+\- unit part of a polynomial
+.br
+\" GINSH_FCN_HELP_END
 .RE
 .SS SPECIAL COMMANDS
 To exit ginsh, enter
@@ -308,6 +350,17 @@ or
 .B exit
 .RE
 .PP
+ginsh can display a (short) help for a given topic (mostly about functions
+and operators) by entering
+.RS
+.BI ? topic
+.RE
+Typing
+.RS
+.B ??
+.RE
+will display a list of available help topics.
+.PP
 The command
 .RS
 .BI print( expression );
@@ -361,6 +414,8 @@ x
 \-2*d\-2*x*c\-x^2*c\-x*d+x^2*d\-c
 > collect(", x);
 (\-d\-2*c)*x+(d\-c)*x^2\-2*d\-c
+> solve quantum field theory;
+parse error at quantum
 > quit
 .fi
 .SH DIAGNOSTICS
@@ -391,7 +446,7 @@ C++ programming language
 .PP
 CLN \- A Class Library for Numbers, Bruno Haible
 .SH COPYRIGHT
-Copyright \(co 1999 Johannes Gutenberg Universit\(:at Mainz, Germany
+Copyright \(co 1999-2000 Johannes Gutenberg Universit\(:at Mainz, Germany
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by