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261
LICENSE
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The Plan 9 software is provided under the terms of the
Lucent Public License, Version 1.02, reproduced below,
with the following notable exceptions:
1. No right is granted to create derivative works of or
to redistribute (other than with the Plan 9 Operating System)
the screen imprinter fonts identified in subdirectory
/lib/font/bit/lucida and printer fonts (Lucida Sans Unicode, Lucida
Sans Italic, Lucida Sans Demibold, Lucida Typewriter, Lucida Sans
Typewriter83), identified in subdirectory /sys/lib/postscript/font.
These directories contain material copyrights by B&H Inc. and Y&Y Inc.
2. The printer fonts identified in subdirectory /sys/lib/ghostscript/font
are subject to the GNU GPL, reproduced in the file /LICENSE.gpl.
3. The ghostscript program in the subdirectory /sys/src/cmd/gs is
covered by the Aladdin Free Public License, reproduced in the file
/LICENSE.afpl.
Other, less notable exceptions are marked in the file tree with
COPYING, COPYRIGHT, or LICENSE files.
===================================================================
Lucent Public License Version 1.02
THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS PUBLIC
LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE
PROGRAM CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
1. DEFINITIONS
"Contribution" means:
a. in the case of Lucent Technologies Inc. ("LUCENT"), the Original
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b. in the case of each Contributor,
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ii. additions to the Program;
where such changes and/or additions to the Program were added to the
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Copyright (C) 2003, Lucent Technologies Inc. and others. All Rights
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All Recipient's rights under this Agreement shall terminate if it
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This Agreement is governed by the laws of the State of New York and
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more than one year after the cause of action arose. Each party waives
its rights to a jury trial in any resulting litigation.

258
LICENSE.afpl
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Aladdin Free Public License
(Version 9, September 18, 2000)
Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000 Aladdin Enterprises,
Menlo Park, California, U.S.A. All rights reserved.
NOTE: This License is not the same as any of the GNU Licenses
published by the Free Software Foundation. Its terms are
substantially different from those of the GNU Licenses. If you are
familiar with the GNU Licenses, please read this license with extra
care.
Aladdin Enterprises hereby grants to anyone the permission to apply
this License to their own work, as long as the entire License
(including the above notices and this paragraph) is copied with no
changes, additions, or deletions except for changing the first
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holds the copyright in the work, and, if the License is being applied
to a work created in a country other than the United States, replacing
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This License is not an Open Source license: among other things, it
places restrictions on distribution of the Program, specifically
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0. Subject Matter
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Distribution of the Program or any work based on the Program by
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any payment is made in connection with such distribution,
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290
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!! This license applies only to the printer fonts identified in
!! subdirectory /sys/lib/ghostscript/font.
===================================================================
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc. 675 Mass Ave,
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making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
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original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
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license would not permit royalty-free redistribution of the Program by
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the only way you could satisfy both it and this License would be to
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If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
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It is not the purpose of this section to induce you to infringe any
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implemented by public license practices. Many people have made
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This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
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the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new
versions of the General Public License from time to time. Such new
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differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the Program
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10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the
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NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO
WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
END OF TERMS AND CONDITIONS

2
NOTICE
View file

@ -1,2 +0,0 @@
Copyright © 2002 Lucent Technologies Inc.
All Rights Reserved

1310
lib/human Normal file
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File diff suppressed because one or more lines are too long

7
rc/bin/nietzsche Normal file
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@ -0,0 +1,7 @@
#!/bin/rc
if(~ $#* 0)
n=`{seq 1 638 | fortune /fd/0}
if not
n=$*
for(i in $n)
cat /lib/human | sed -n '/^'$i'\./,/^$/p' | nroff | grep .

16
sys/man/1/nietzsche Normal file
View file

@ -0,0 +1,16 @@
.TH NIETZSCHE 1
.SH NAME
nietzsche \- print out Nietzsche quote
.SH SYNOPSIS
.B nietzsche
[
.I numbers
]
.SH DESCRIPTION
.I Nietzsche
cites ``Human, all too human'' by Friedrich Nietzsche.
It prints the aphorisms with the numbers given as arguments, or a random one, if no argument is supplied.
.SH FILES
.B /lib/human
.SH SOURCE
.B /rc/bin/nietzsche

4
sys/man/2/bio
View file

@ -1,6 +1,6 @@
.TH BIO 2
.SH NAME
Bopen, Binit, Binits, Brdline, Brdstr, Bgetc, Bgetrune, Bgetd, Bungetc, Bungetrune, Bread, Bseek, Boffset, Bfildes, Blinelen, Bputc, Bputrune, Bprint, Bvprint, Bwrite, Bflush, Bterm, Bbuffered \- buffered input/output
Bopen, Binit, Binits, Brdline, Brdstr, Bgetc, Bgetrune, Bgetd, Bungetc, Bungetrune, Bread, Bseek, Boffset, Bfildes, Blinelen, Bputc, Bputrune, Bprint, Bvprint, Bwrite, Bflush, Bterm, Bbuffered, Blethal \- buffered input/output
.SH SYNOPSIS
.ta \w'Biobuf* 'u
.B #include <u.h>
@ -79,7 +79,7 @@ int Bflush(Biobufhdr *bp)
int Bbuffered(Biobufhdr *bp)
.PP
.B
void Blethal(Biobufhdr *bp, void (*errorf)(char *));
void Blethal(Biobufhdr *bp, void (*errorf)(char *))
.PP
.SH DESCRIPTION
These routines implement fast buffered I/O.

543
sys/src/cmd/fplot.c Normal file
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@ -0,0 +1,543 @@
#include <u.h>
#include <libc.h>
#include <ctype.h>
#include <draw.h>
#include <event.h>
typedef struct Op Op;
typedef struct Operator Operator;
typedef struct Token Token;
typedef struct Constant Constant;
typedef struct Code Code;
enum {
ONONE,
ONUMBER,
OVAR,
OUNARY,
OBINARY,
};
struct Op {
int type;
union {
void (*f)(void);
double val;
};
};
enum {
TNONE,
TNUMBER,
TVAR,
TOP,
TPARENL,
TPARENR,
};
struct Token {
int type;
union {
Operator *op;
double val;
};
Token *next;
};
double *stack, *sp;
void add(void) { sp--; *sp += *(sp+1); }
void sub(void) { sp--; *sp -= *(sp+1); }
void mul(void) { sp--; *sp *= *(sp+1); }
void div(void) { sp--; *sp /= *(sp+1); }
void pot(void) { sp--; *sp = pow(*sp, *(sp+1)); }
void osin(void) { *sp = sin(*sp); }
void ocos(void) { *sp = cos(*sp); }
void otan(void) { *sp = tan(*sp); }
void oasin(void) { *sp = asin(*sp); }
void oacos(void) { *sp = acos(*sp); }
void oatan(void) { *sp = atan(*sp); }
void osqrt(void) { *sp = sqrt(*sp); }
void olog(void) { *sp = log10(*sp); }
void oln(void) { *sp = log(*sp); }
struct Operator {
char *s;
char type;
char rassoc;
short prec;
void (*f)(void);
} ops[] = {
"+", OBINARY, 0, 0, add,
"-", OBINARY, 0, 0, sub,
"*", OBINARY, 0, 100, mul,
"/", OBINARY, 0, 100, div,
"^", OBINARY, 1, 200, pot,
"sin", OUNARY, 0, 50, osin,
"cos", OUNARY, 0, 50, ocos,
"tan", OUNARY, 0, 50, otan,
"asin", OUNARY, 0, 50, oasin,
"acos", OUNARY, 0, 50, oacos,
"atan", OUNARY, 0, 50, oatan,
"sqrt", OUNARY, 0, 50, osqrt,
"log", OUNARY, 0, 50, olog,
"ln", OUNARY, 0, 50, oln,
};
struct Constant {
char *s;
double val;
} consts[] = {
"pi", 3.14159265359,
"π", 3.14159265359,
"e", 2.71828182846,
};
struct Code {
Op* p;
int len, cap;
} *fns;
int nfns;
Token *opstackbot;
double xmin = -10, xmax = 10;
double ymin = -10, ymax = 10;
Image *color;
int cflag;
char *imagedata;
int picx = 640, picy = 480;
void *
emalloc(int size)
{
void *v;
v = mallocz(size, 1);
if(v == nil)
sysfatal("emalloc: %r");
setmalloctag(v, getcallerpc(&size));
return v;
}
void
addop(Code *c, Op o)
{
if(c->len >= c->cap) {
c->cap += 32;
c->p = realloc(c->p, sizeof(Op) * c->cap);
if(c->p == nil)
sysfatal("realloc: %r");
}
c->p[c->len++] = o;
}
void
push(Token *t)
{
t->next = opstackbot;
opstackbot = t;
}
void
pop(Code *c)
{
Token *t;
Op o;
t = opstackbot;
if(t == nil)
sysfatal("stack underflow");
opstackbot = t->next;
if(t->type != TOP)
sysfatal("non-operator pop");
o.type = t->op->type;
o.f = t->op->f;
addop(c, o);
free(t);
}
void
popdel(void)
{
Token *t;
t = opstackbot;
opstackbot = t->next;
free(t);
}
Token *
lex(char **s)
{
Token *t;
Operator *o;
Constant *c;
while(isspace(**s))
(*s)++;
if(**s == 0)
return nil;
t = emalloc(sizeof(*t));
if(isdigit(**s)) {
t->type = TNUMBER;
t->val = strtod(*s, s);
return t;
}
if(**s == '(') {
t->type = TPARENL;
(*s)++;
return t;
}
if(**s == ')') {
t->type = TPARENR;
(*s)++;
return t;
}
if(**s == 'x') {
t->type = TVAR;
(*s)++;
return t;
}
for(o = ops; o < ops + nelem(ops); o++)
if(strncmp(*s, o->s, strlen(o->s)) == 0) {
t->type = TOP;
t->op = o;
*s += strlen(o->s);
return t;
}
for(c = consts; c < consts + nelem(consts); c++)
if(strncmp(*s, c->s, strlen(c->s)) == 0) {
t->type = TNUMBER;
t->val = c->val;
*s += strlen(c->s);
return t;
}
sysfatal("syntax error at %s", *s);
return nil;
}
void
parse(Code *c, char *s)
{
Token *t;
Op o;
while(t = lex(&s)) {
switch(t->type) {
case TNUMBER:
o.type = ONUMBER;
o.val = t->val;
addop(c, o);
free(t);
break;
case TVAR:
o.type = OVAR;
addop(c, o);
free(t);
break;
case TOP:
if(t->op->type == OBINARY)
while(opstackbot != nil && opstackbot->type == TOP &&
(opstackbot->op->prec > t->op->prec ||
t->op->rassoc && opstackbot->op->prec == t->op->prec))
pop(c);
push(t);
break;
case TPARENL:
push(t);
break;
case TPARENR:
while(opstackbot != nil && opstackbot->type == TOP)
pop(c);
if(opstackbot == nil)
sysfatal("mismatched parentheses");
popdel();
free(t);
break;
default:
sysfatal("unknown token type %d", t->type);
}
}
while(opstackbot != nil)
switch(opstackbot->type) {
case TOP:
pop(c);
break;
case TPARENL:
sysfatal("mismatched parentheses");
default:
sysfatal("syntax error");
}
}
int
calcstack(Code *c)
{
int cur, max;
Op *o;
cur = 0;
max = 0;
for(o = c->p; o < c->p + c->len; o++)
switch(o->type) {
case ONUMBER: case OVAR:
if(++cur > max)
max = cur;
break;
case OUNARY:
if(cur == 0)
sysfatal("syntax error");
break;
case OBINARY:
if(cur <= 1)
sysfatal("syntax error");
cur--;
break;
}
if(cur != 1)
sysfatal("syntax error");
return max;
}
double
calc(Code *c, double x)
{
Op *o;
sp = stack - 1;
for(o = c->p; o < c->p + c->len; o++)
switch(o->type) {
case ONUMBER:
*++sp = o->val;
break;
case OVAR:
*++sp = x;
break;
case OUNARY: case OBINARY:
o->f();
}
return *sp;
}
double
convx(Rectangle *r, int x)
{
return (xmax - xmin) * (x - r->min.x) / (r->max.x - r->min.x) + xmin;
}
int
deconvx(Rectangle *r, double dx)
{
return (dx - xmin) * (r->max.x - r->min.x) / (xmax - xmin) + r->min.x + 0.5;
}
double
convy(Rectangle *r, int y)
{
return (ymax - ymin) * (r->max.y - y) / (r->max.y - r->min.y) + ymin;
}
int
deconvy(Rectangle *r, double dy)
{
return (ymax - dy) * (r->max.y - r->min.y) / (ymax - ymin) + r->min.y + 0.5;
}
void
pixel(int x, int y)
{
char *p;
if(cflag) {
if(x >= picx || y >= picy || x < 0 || y < 0)
return;
p = imagedata + (picx * y + x) * 3;
p[0] = p[1] = p[2] = 0;
} else
draw(screen, Rect(x, y, x + 1, y + 1), color, nil, ZP);
}
void
drawinter(Code *co, Rectangle *r, double x1, double x2, int n)
{
double y1, y2;
int iy1, iy2;
int ix1, ix2;
ix1 = deconvx(r, x1);
ix2 = deconvx(r, x2);
iy1 = iy2 = 0;
y1 = calc(co, x1);
if(!isNaN(y1)) {
iy1 = deconvy(r, y1);
pixel(ix1, iy1);
}
y2 = calc(co, x2);
if(!isNaN(y2)) {
iy2 = deconvy(r, y2);
pixel(ix2, iy2);
}
if(isNaN(y1) || isNaN(y2))
return;
if(n >= 10)
return;
if(iy2 >= iy1 - 1 && iy2 <= iy1 + 1)
return;
if(iy1 > r->max.y && iy2 > r->max.y)
return;
if(iy1 < r->min.y && iy2 < r->min.y)
return;
drawinter(co, r, x1, (x1 + x2) / 2, n + 1);
drawinter(co, r, (x1 + x2) / 2, x2, n + 1);
}
void
drawgraph(Code *co, Rectangle *r)
{
int x;
for(x = r->min.x; x < r->max.x; x++)
drawinter(co, r, convx(r, x), convx(r, x + 1), 0);
}
void
drawgraphs(void)
{
int i;
color = display->black;
for(i = 0; i < nfns; i++)
drawgraph(&fns[i], &screen->r);
flushimage(display, 1);
}
void
usage(void)
{
fprint(2, "usage: fplot [-c [-s size]] [-r range] functions ...\n");
exits("usage");
}
void
zoom(void)
{
Mouse m;
Rectangle r;
double xmin_, xmax_, ymin_, ymax_;
m.buttons = 7;
r = egetrect(1, &m);
if(r.min.x == 0 && r.min.y == 0 && r.max.x == 0 && r.max.y == 0)
return;
xmin_ = convx(&screen->r, r.min.x);
xmax_ = convx(&screen->r, r.max.x);
ymin_ = convy(&screen->r, r.max.y);
ymax_ = convy(&screen->r, r.min.y);
xmin = xmin_;
xmax = xmax_;
ymin = ymin_;
ymax = ymax_;
draw(screen, screen->r, display->white, nil, ZP);
drawgraphs();
}
void
parsefns(int n, char **s)
{
int i, max, cur;
max = 0;
nfns = n;
fns = emalloc(sizeof(*fns) * n);
for(i = 0; i < nfns; i++) {
parse(&fns[i], s[i]);
cur = calcstack(&fns[i]);
if(cur > max)
max = cur;
}
stack = emalloc(sizeof(*stack) * max);
}
void
parserange(char *s)
{
while(*s && !isdigit(*s)) s++;
if(*s == 0) return;
xmin = strtod(s, &s);
while(*s && !isdigit(*s)) s++;
if(*s == 0) return;
xmax = strtod(s, &s);
while(*s && !isdigit(*s)) s++;
if(*s == 0) return;
ymin = strtod(s, &s);
while(*s && !isdigit(*s)) s++;
if(*s == 0) return;
ymax = strtod(s, &s);
}
void
parsesize(char *s)
{
while(*s && !isdigit(*s)) s++;
if(*s == 0) return;
picx = strtol(s, &s, 0);
while(*s && !isdigit(*s)) s++;
if(*s == 0) return;
picy = strtol(s, &s, 0);
}
void
main(int argc, char **argv)
{
Event e;
Rectangle r;
int i;
ARGBEGIN {
case 'r': parserange(EARGF(usage())); break;
case 's': parsesize(EARGF(usage())); break;
case 'c': cflag++; break;
default: usage();
} ARGEND;
if(argc < 1)
usage();
setfcr(getfcr() & ~(FPZDIV | FPINVAL));
parsefns(argc, argv);
if(cflag) {
imagedata = emalloc(picx * picy * 3);
memset(imagedata, 0xFF, picx * picy * 3);
print("%11s %11d %11d %11d %11d ", "r8g8b8", 0, 0, picx, picy);
r.min.x = r.min.y = 0;
r.max.x = picx;
r.max.y = picy;
for(i = 0; i < nfns; i++)
drawgraph(&fns[i], &r);
if(write(1, imagedata, picx * picy * 3) < picx * picy * 3)
sysfatal("write: %r");
} else {
if(initdraw(nil, nil, "fplot") < 0)
sysfatal("initdraw: %r");
einit(Emouse | Ekeyboard);
drawgraphs();
for(;;) {
switch(event(&e)) {
case Ekeyboard:
switch(e.kbdc) {
case 'q': exits(nil);
case 'z': zoom();
}
}
}
}
}
void
eresized(int new)
{
if(new) {
if(getwindow(display, Refnone) < 0)
sysfatal("getwindow: %r");
drawgraphs();
}
}