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Updating to version 1.04.
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phil committed Apr 29, 1997
1 parent 0ec25f8 commit 287b2c6
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14 changes: 10 additions & 4 deletions gnu/usr.bin/bc/Makefile
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@@ -1,13 +1,19 @@
# $Id: Makefile,v 1.1.1.1 1994/12/01 04:24:14 phil Exp $
# $NetBSD: Makefile,v 1.1.1.2 1997/04/29 00:11:10 phil Exp $

PROG= bc
CFLAGS+=-D_POSIX_SOURCE -DDOT_IS_LAST -I. -I${.CURDIR}
CFLAGS+=-D_POSIX_SOURCE -I. -I${.CURDIR}
LFLAGS+=-I8
SRCS= bc.c scan.c util.c main.c number.c storage.c load.c execute.c global.c
SRCS= bc.c scan.c util.c main.c number.c storage.c load.c execute.c \
global.c getopt.c getopt1.c

LDADD+= -ll
DPADD+= ${LIBL}

CLEANFILES+= bc.c scan.c y.tab.h
CLEANFILES+= bc.c scan.c bc.h

bc.c bc.h: bc.y
$(YACC) -d bc.y
mv y.tab.c bc.c
mv y.tab.h bc.h

.include <bsd.prog.mk>
15 changes: 10 additions & 5 deletions gnu/usr.bin/bc/README.NetBSD
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@@ -1,8 +1,13 @@
This is GNU bc 1.03.
This is GNU bc 1.04.

The full distribution of GNU bc-1.04 may be found at any GNU software
archive. The master copy is at ftp://prep.ai.mit.edu/pub/gnu/bc-1.04.tar.gz.

Not everything included in the full bc-1.04 distribution is included.
The files included here are only the needed files for building bc on
NetBSD. Their location in the NetBSD tree are different than in the
original bc-1.04 source tree.


The original GNU distribution included GNU dc in the same distribution.
GNU dc part is found in the NetBSD source tree in /usr/src/gnu/usr.bin/dc.

With all the files located in the bc and dc directories, an "original"
bc-1.03 distribution could be regenerated. (It require GNU autoconf 2.0.)

82 changes: 69 additions & 13 deletions gnu/usr.bin/bc/bc.1
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@@ -1,8 +1,8 @@
.\"
.\" bc.1 - the *roff document processor source for the bc manual
.\"
.\" This file is part of bc written initially for MINIX.
.\" Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
.\" This file is part of GNU bc.
.\" Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
.\"
.\" 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
Expand All @@ -26,13 +26,13 @@
.\" Bellingham, WA 98226-9062
.\"
.\"
.TH bc 1 .\" "Command Manual" v1.03 "Nov 2, 1994"
.TH bc 1 .\" "Command Manual" v1.04 "June 22, 1995"
.SH NAME
bc - An arbitrary precision calculator language
.SH SYNTAX
\fBbc\fR [ \fB-lws\fR ] [ \fI file ...\fR ]
\fBbc\fR [ \fB-lwsqv\fR ] [long-options] [ \fI file ...\fR ]
.SH VERSION
This man page documents GNU bc version 1.03.
This man page documents GNU bc version 1.04.
.SH DESCRIPTION
\fBbc\fR is a language that supports arbitrary precision numbers
with interactive execution of statements. There are some similarities
Expand All @@ -58,6 +58,20 @@ Define the standard math library.
Give warnings for extensions to POSIX \fBbc\fR.
.IP -s
Process exactly the POSIX \fBbc\fR language.
.IP -q
Do not print the normal GNU bc welcome.
.IP -v
Print the version number and copyright and quit.
.IP --mathlib
Define the standard math library.
.IP --warn
Give warnings for extensions to POSIX \fBbc\fR.
.IP --standard
Process exactly the POSIX \fBbc\fR language.
.IP --quiet
Do not print the normal GNU bc welcome.
.IP --version
Print the version number and copyright and quit.
.SS NUMBERS
The most basic element in \fBbc\fR is the number. Numbers are
arbitrary precision numbers. This precision is both in the integer
Expand Down Expand Up @@ -99,6 +113,11 @@ single space in the input. (This causes comments to delimit other
input items. For example, a comment can not be found in the middle of
a variable name.) Comments include any newlines (end of line) between
the start and the end of the comment.
.PP
To support the use of scripts for \fBbc\fR, a single line comment has been
added as an extension. A single line comment starts at a \fB#\fR
character and continues to the next end of the line. The end of line
character is not part of the comment and is processed normally.
.SS EXPRESSIONS
The numbers are manipulated by expressions and statements. Since
the language was designed to be interactive, statements and expressions
Expand All @@ -109,7 +128,7 @@ detail later, are defined when encountered.)
A simple expression is just a constant. \fBbc\fR converts constants
into internal decimal numbers using the current input base, specified
by the variable \fBibase\fR. (There is an exception in functions.)
The legal values of \fBibase\fR are 2 through 16 (F). Assigning a
The legal values of \fBibase\fR are 2 through 16. Assigning a
value outside this range to \fBibase\fR will result in a value of 2
or 16. Input numbers may contain the characters 0-9 and A-F. (Note:
They must be capitals. Lower case letters are variable names.)
Expand Down Expand Up @@ -339,7 +358,7 @@ Any other character following the backslash will be ignored.
.IP "{ statement_list }"
This is the compound statement. It allows multiple statements to be
grouped together for execution.
.IP "\fBif\fR ( expression ) \fBthen\fR statement1 [\fBelse\fR statement2]"
.IP "\fBif\fR ( expression ) statement1 [\fBelse\fR statement2]"
The if statement evaluates the expression and executes statement1 or
statement2 depending on the value of the expression. If the expression
is non-zero, statement1 is executed. If statement2 is present and
Expand Down Expand Up @@ -431,7 +450,7 @@ A runtime error will also occur for the call to an undefined function.
.PP
The \fIauto_list\fR is an optional list of variables that are for
"local" use. The syntax of the auto list (if present) is "\fBauto
\fIname \fR, ... ;". (The semicolon is optional.) Each \fIname\fR is
\fIname\fR, ... ;". (The semicolon is optional.) Each \fIname\fR is
the name of an auto variable. Arrays may be specified by using the
same notation as used in parameters. These variables have their
values pushed onto a stack at the start of the function. The
Expand Down Expand Up @@ -468,11 +487,11 @@ and the default scale is set to 20. The math functions will calculate their
results to the scale set at the time of their call.
The math library defines the following functions:
.IP "s (\fIx\fR)"
The sine of x in radians.
The sine of x, x is in radians.
.IP "c (\fIx\fR)"
The cosine of x in radians.
The cosine of x, x is in radians.
.IP "a (\fIx\fR)"
The arctangent of x.
The arctangent of x, arctangent returns radians.
.IP "l (\fIx\fR)"
The natural logarithm of x.
.IP "e (\fIx\fR)"
Expand Down Expand Up @@ -575,6 +594,19 @@ define f (x) {
\fR
.RE
.fi
.SS READLINE OPTION
GNU \fBbc\fR can be compiled (via a configure option) to use the
GNU \fBreadline\fR input editor library. This allows the user
to do more editing of lines before sending them to \fBbc\fR.
It also allows for a history of previous lines typed. When this
option is selected, \fBbc\fR has one more special variable.
This special variable, \fBhistory\fR is the number of lines of
history retained. A value of -1 means that an unlimited number
of history lines are retained. This is the default value.
Setting the value of \fBhistory\fR to a positive number restricts
the number of history lines to the number given. The value of
0 disables the history feature. For more information, read the
user manuals for the GNU \fBreadline\fR and \fBhistory\fR libraries.
.SS DIFFERENCES
This version of
.B bc
Expand Down Expand Up @@ -626,8 +658,11 @@ POSIX \fBbc\fR does not have a print statement .
.IP "continue statement"
POSIX \fBbc\fR does not have a continue statement.
.IP "array parameters"
POSIX \fBbc\fR does not have array parameters. Other implementations
of \fBbc\fR may have call by value array parameters.
POSIX \fBbc\fR does not (currently) support array parameters in full.
The POSIX grammar allows for arrays in function definitions, but does
not provide a method to specify an array as an actual parameter. (This
is most likely an oversight in the grammar.) Traditional implementations
of \fBbc\fR have only call by value array parameters.
.IP "=+, =-, =*, =/, =%, =^"
POSIX \fBbc\fR does not require these "old style" assignment operators to
be defined. This version may allow these "old style" assignments. Use
Expand Down Expand Up @@ -708,6 +743,23 @@ to have more than 16 segments of 1024 bytes.
.IP "variable names"
The current limit on the number of unique names is 32767 for each of
simple variables, arrays and functions.
.SH ENVIRONMENT VARIABLES
The following environment variables are processed by \fBbc\fR:
.IP "POSIXLY_CORRECT"
This is the same as the \fB-s\fR option.
.IP "BC_ENV_ARGS"
This is another mechanism to get arguments to \fBbc\fR. The
format is the same as the command line arguments. These arguments
are processed first, so any files listed in the environent arguments
are processed before any command line argument files. This allows
the user to set up "standard" options and files to be processed
at every invocation of \fBbc\fR. The files in the environment
variables would typically contain function definitions for functions
the user wants defined every time \fBbc\fR is run.
.IP "BC_LINE_LENGTH"
This should be an integer specifing the number of characters in an
output line for numbers. This includes the backslash and newline characters
for long numbers.
.SH FILES
In most installations, \fBbc\fR is completely self-contained.
Where executable size is of importance or the C compiler does
Expand All @@ -720,6 +772,10 @@ that the file is unavailable and terminate. Also, there are compile
and run time diagnostics that should be self-explanatory.
.SH BUGS
Error recovery is not very good yet.
.PP
Email bug reports to
.BR bug-gnu-utils@prep.ai.mit.edu .
Be sure to include the word ``bc'' somewhere in the ``Subject:'' field.
.SH AUTHOR
.nf
Philip A. Nelson
Expand Down

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