version 1.47, 2000/07/14 08:55:15
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version 1.56, 2000/08/17 12:46:57
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Line 36
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Line 36
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\ be separated by at least one empty line |
\ be separated by at least one empty line |
\ |
\ |
\ Both pronounciation and stack items (in the stack effect) must |
\ Both pronounciation and stack items (in the stack effect) must |
\ conform to the C name syntax or the C compiler will complain. |
\ conform to the C identifier syntax or the C compiler will complain. |
\ |
\ If you don't have a pronounciation field, the Forth name is used, |
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\ and has to conform to the C identifier syntax. |
\ |
\ |
\ These specifications are automatically translated into C-code for the |
\ These specifications are automatically translated into C-code for the |
\ interpreter and into some other files. I hope that your C compiler has |
\ interpreter and into some other files. I hope that your C compiler has |
Line 120 IF_TOS(TOS = sp[0]);
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Line 121 IF_TOS(TOS = sp[0]);
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EXEC(xt); |
EXEC(xt); |
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perform ( a_addr -- ) gforth |
perform ( a_addr -- ) gforth |
""Equivalent to @code{@ execute}."" |
""@code{@@ execute}."" |
/* and pfe */ |
/* and pfe */ |
ip=IP; |
ip=IP; |
IF_TOS(TOS = sp[0]); |
IF_TOS(TOS = sp[0]); |
Line 444 n = rp[4];
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Line 445 n = rp[4];
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\ digit is high-level: 0/0% |
\ digit is high-level: 0/0% |
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move ( c_from c_to ucount -- ) core |
move ( c_from c_to ucount -- ) core |
""Copy the contents of @i{ucount} address units at @i{c-from} to |
""Copy the contents of @i{ucount} aus at @i{c-from} to |
@i{c-to}. @code{move} works correctly even if the two areas overlap."" |
@i{c-to}. @code{move} works correctly even if the two areas overlap."" |
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/* !! note that the standard specifies addr, not c-addr */ |
memmove(c_to,c_from,ucount); |
memmove(c_to,c_from,ucount); |
/* make an Ifdef for bsd and others? */ |
/* make an Ifdef for bsd and others? */ |
: |
: |
Line 474 while (u-- > 0)
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Line 476 while (u-- > 0)
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DO 1- dup c@ I c! -1 +LOOP drop ; |
DO 1- dup c@ I c! -1 +LOOP drop ; |
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fill ( c_addr u c -- ) core |
fill ( c_addr u c -- ) core |
"" If @i{u}>0, store character @i{c} in each of @i{u} consecutive |
""Store @i{c} in @i{u} chars starting at @i{c-addr}."" |
@code{char} addresses in memory, starting at address @i{c-addr}."" |
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memset(c_addr,c,u); |
memset(c_addr,c,u); |
: |
: |
-rot bounds |
-rot bounds |
Line 510 else if (n>0)
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Line 511 else if (n>0)
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: |
: |
swap bounds |
swap bounds |
?DO dup c@ I c@ = WHILE 1+ LOOP drop 0 |
?DO dup c@ I c@ = WHILE 1+ LOOP drop 0 |
ELSE c@ I c@ - unloop THEN -text-flag ; |
ELSE c@ I c@ - unloop THEN sgn ; |
: sgn ( n -- -1/0/1 ) |
: sgn ( n -- -1/0/1 ) |
dup 0= IF EXIT THEN 0< 2* 1+ ; |
dup 0= IF EXIT THEN 0< 2* 1+ ; |
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Line 532 else if (n>0)
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Line 533 else if (n>0)
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?DO dup c@ I c@ <> |
?DO dup c@ I c@ <> |
IF dup c@ toupper I c@ toupper = |
IF dup c@ toupper I c@ toupper = |
ELSE true THEN WHILE 1+ LOOP drop 0 |
ELSE true THEN WHILE 1+ LOOP drop 0 |
ELSE c@ toupper I c@ toupper - unloop THEN -text-flag ; |
ELSE c@ toupper I c@ toupper - unloop THEN sgn ; |
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-trailing ( c_addr u1 -- c_addr u2 ) string dash_trailing |
-trailing ( c_addr u1 -- c_addr u2 ) string dash_trailing |
""Adjust the string specified by @i{c-addr, u1} to remove all trailing |
""Adjust the string specified by @i{c-addr, u1} to remove all trailing |
Line 599 else
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Line 600 else
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: |
2dup > IF swap THEN drop ; |
2dup > IF swap THEN drop ; |
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abs ( n1 -- n2 ) core |
abs ( n -- u ) core |
if (n1<0) |
if (n<0) |
n2 = -n1; |
u = -n; |
else |
else |
n2 = n1; |
u = n; |
: |
: |
dup 0< IF negate THEN ; |
dup 0< IF negate THEN ; |
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Line 629 n3 = n1%n2; /* !! is this correct? look
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Line 630 n3 = n1%n2; /* !! is this correct? look
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>r s>d r> fm/mod ; |
>r s>d r> fm/mod ; |
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2* ( n1 -- n2 ) core two_star |
2* ( n1 -- n2 ) core two_star |
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""Shift left by 1; also works on unsigned numbers"" |
n2 = 2*n1; |
n2 = 2*n1; |
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: |
dup + ; |
dup + ; |
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2/ ( n1 -- n2 ) core two_slash |
2/ ( n1 -- n2 ) core two_slash |
/* !! is this still correct? */ |
""Arithmetic shift right by 1. For signed numbers this is a floored |
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division by 2 (note that @code{/} not necessarily floors)."" |
n2 = n1>>1; |
n2 = n1>>1; |
: |
: |
dup MINI and IF 1 ELSE 0 THEN |
dup MINI and IF 1 ELSE 0 THEN |
Line 776 d2 = -d1;
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Line 779 d2 = -d1;
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invert swap negate tuck 0= - ; |
invert swap negate tuck 0= - ; |
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d2* ( d1 -- d2 ) double d_two_star |
d2* ( d1 -- d2 ) double d_two_star |
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""Shift left by 1; also works on unsigned numbers"" |
#ifdef BUGGY_LONG_LONG |
#ifdef BUGGY_LONG_LONG |
d2.lo = d1.lo<<1; |
d2.lo = d1.lo<<1; |
d2.hi = (d1.hi<<1) | (d1.lo>>(CELL_BITS-1)); |
d2.hi = (d1.hi<<1) | (d1.lo>>(CELL_BITS-1)); |
Line 786 d2 = 2*d1;
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Line 790 d2 = 2*d1;
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2dup d+ ; |
2dup d+ ; |
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d2/ ( d1 -- d2 ) double d_two_slash |
d2/ ( d1 -- d2 ) double d_two_slash |
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""Arithmetic shift right by 1. For signed numbers this is a floored |
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division by 2."" |
#ifdef BUGGY_LONG_LONG |
#ifdef BUGGY_LONG_LONG |
d2.hi = d1.hi>>1; |
d2.hi = d1.hi>>1; |
d2.lo= (d1.lo>>1) | (d1.hi<<(CELL_BITS-1)); |
d2.lo= (d1.lo>>1) | (d1.hi<<(CELL_BITS-1)); |
Line 813 w2 = ~w1;
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Line 819 w2 = ~w1;
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MAXU xor ; |
MAXU xor ; |
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rshift ( u1 n -- u2 ) core r_shift |
rshift ( u1 n -- u2 ) core r_shift |
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""Logical shift right by @i{n} bits."" |
u2 = u1>>n; |
u2 = u1>>n; |
: |
: |
0 ?DO 2/ MAXI and LOOP ; |
0 ?DO 2/ MAXI and LOOP ; |
Line 938 about this word is to consider the numbe
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Line 945 about this word is to consider the numbe
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around from @code{max-u} to 0 for unsigned, and from @code{max-n} to |
around from @code{max-u} to 0 for unsigned, and from @code{max-n} to |
min-n for signed numbers); now consider the range from u2 towards |
min-n for signed numbers); now consider the range from u2 towards |
increasing numbers up to and excluding u3 (giving an empty range if |
increasing numbers up to and excluding u3 (giving an empty range if |
u2=u3; if u1 is in this range, @code{within} returns true."" |
u2=u3); if u1 is in this range, @code{within} returns true."" |
f = FLAG(u1-u2 < u3-u2); |
f = FLAG(u1-u2 < u3-u2); |
: |
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over - >r - r> u< ; |
over - >r - r> u< ; |
Line 971 fp = f_addr;
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Line 978 fp = f_addr;
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SET_IP((Xt *)(*rp++)); |
SET_IP((Xt *)(*rp++)); |
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>r ( w -- ) core to_r |
>r ( w -- ) core to_r |
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""@code{( R: -- w )}"" |
*--rp = w; |
*--rp = w; |
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(>r) ; |
(>r) ; |
: (>r) rp@ cell+ @ rp@ ! rp@ cell+ ! ; |
: (>r) rp@ cell+ @ rp@ ! rp@ cell+ ! ; |
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r> ( -- w ) core r_from |
r> ( -- w ) core r_from |
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""@code{( R: w -- )}"" |
w = *rp++; |
w = *rp++; |
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rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ; |
rp@ cell+ @ rp@ @ rp@ cell+ ! (rdrop) rp@ ! ; |
Create (rdrop) ' ;s A, |
Create (rdrop) ' ;s A, |
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rdrop ( -- ) gforth |
rdrop ( -- ) gforth |
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""@code{( R: w -- )}"" |
rp++; |
rp++; |
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r> r> drop >r ; |
r> r> drop >r ; |
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2>r ( w1 w2 -- ) core-ext two_to_r |
2>r ( w1 w2 -- ) core-ext two_to_r |
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""@code{( R: -- w1 w2 )}"" |
*--rp = w1; |
*--rp = w1; |
*--rp = w2; |
*--rp = w2; |
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: |
swap r> swap >r swap >r >r ; |
swap r> swap >r swap >r >r ; |
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2r> ( -- w1 w2 ) core-ext two_r_from |
2r> ( -- w1 w2 ) core-ext two_r_from |
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""@code{( R: w1 w2 -- )}"" |
w2 = *rp++; |
w2 = *rp++; |
w1 = *rp++; |
w1 = *rp++; |
: |
: |
r> r> swap r> swap >r swap ; |
r> r> swap r> swap >r swap ; |
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2r@ ( -- w1 w2 ) core-ext two_r_fetch |
2r@ ( -- w1 w2 ) core-ext two_r_fetch |
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""@code{( R: w1 w2 -- w1 w2 )}"" |
w2 = rp[0]; |
w2 = rp[0]; |
w1 = rp[1]; |
w1 = rp[1]; |
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: |
i' j ; |
i' j ; |
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2rdrop ( -- ) gforth two_r_drop |
2rdrop ( -- ) gforth two_r_drop |
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""@code{( R: w1 w2 -- )}"" |
rp+=2; |
rp+=2; |
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r> r> drop r> drop >r ; |
r> r> drop r> drop >r ; |
Line 1049 tuck ( w1 w2 -- w2 w1 w2 ) core-ext
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Line 1063 tuck ( w1 w2 -- w2 w1 w2 ) core-ext
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swap over ; |
swap over ; |
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?dup ( w -- w ) core question_dupe |
?dup ( w -- w ) core question_dupe |
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""Actually the stack effect is: @code{( w -- 0 | w w )}. It performs a |
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@code{dup} if w is nonzero."" |
if (w!=0) { |
if (w!=0) { |
IF_TOS(*sp-- = w;) |
IF_TOS(*sp-- = w;) |
#ifndef USE_TOS |
#ifndef USE_TOS |
Line 1059 if (w!=0) {
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Line 1075 if (w!=0) {
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dup IF dup THEN ; |
dup IF dup THEN ; |
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pick ( u -- w ) core-ext |
pick ( u -- w ) core-ext |
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""Actually the stack effect is @code{ x0 ... xu u -- x0 ... xu x0 }."" |
w = sp[u+1]; |
w = sp[u+1]; |
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: |
1+ cells sp@ + @ ; |
1+ cells sp@ + @ ; |
Line 1094 w = sp[u+1];
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Line 1111 w = sp[u+1];
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\ toggle is high-level: 0.11/0.42% |
\ toggle is high-level: 0.11/0.42% |
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@ ( a_addr -- w ) core fetch |
@ ( a_addr -- w ) core fetch |
"" Read from the cell at address @i{a-addr}, and return its contents, @i{w}."" |
""@i{w} is the cell stored at @i{a_addr}."" |
w = *a_addr; |
w = *a_addr; |
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! ( w a_addr -- ) core store |
! ( w a_addr -- ) core store |
"" Write the value @i{w} to the cell at address @i{a-addr}."" |
""Store @i{w} into the cell at @i{a-addr}."" |
*a_addr = w; |
*a_addr = w; |
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+! ( n a_addr -- ) core plus_store |
+! ( n a_addr -- ) core plus_store |
"" Add @i{n} to the value stored in the cell at address @i{a-addr}."" |
""Add @i{n} to the cell at @i{a-addr}."" |
*a_addr += n; |
*a_addr += n; |
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tuck @ + swap ! ; |
tuck @ + swap ! ; |
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c@ ( c_addr -- c ) core c_fetch |
c@ ( c_addr -- c ) core c_fetch |
"" Read from the char at address @i{c-addr}, and return its contents, @i{c}."" |
""@i{c} is the char stored at @i{c_addr}."" |
c = *c_addr; |
c = *c_addr; |
: |
: |
[ bigendian [IF] ] |
[ bigendian [IF] ] |
Line 1134 c = *c_addr;
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Line 1151 c = *c_addr;
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: 8>> 2/ 2/ 2/ 2/ 2/ 2/ 2/ 2/ ; |
: 8>> 2/ 2/ 2/ 2/ 2/ 2/ 2/ 2/ ; |
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c! ( c c_addr -- ) core c_store |
c! ( c c_addr -- ) core c_store |
"" Write the value @i{c} to the char at address @i{c-addr}."" |
""Store @i{c} into the char at @i{c-addr}."" |
*c_addr = c; |
*c_addr = c; |
: |
: |
[ bigendian [IF] ] |
[ bigendian [IF] ] |
Line 1164 c! ( c c_addr -- ) core c_store
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Line 1181 c! ( c c_addr -- ) core c_store
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: 8<< 2* 2* 2* 2* 2* 2* 2* 2* ; |
: 8<< 2* 2* 2* 2* 2* 2* 2* 2* ; |
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2! ( w1 w2 a_addr -- ) core two_store |
2! ( w1 w2 a_addr -- ) core two_store |
"" Write the value @i{w1, w2} to the double at address @i{a-addr}."" |
""Store @i{w2} into the cell at @i{c-addr} and @i{w1} into the next cell."" |
a_addr[0] = w2; |
a_addr[0] = w2; |
a_addr[1] = w1; |
a_addr[1] = w1; |
: |
: |
tuck ! cell+ ! ; |
tuck ! cell+ ! ; |
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2@ ( a_addr -- w1 w2 ) core two_fetch |
2@ ( a_addr -- w1 w2 ) core two_fetch |
"" Read from the double at address @i{a-addr}, and return its contents, @i{w1, w2}."" |
""@i{w2} is the content of the cell stored at @i{a-addr}, @i{w1} is |
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the content of the next cell."" |
w2 = a_addr[0]; |
w2 = a_addr[0]; |
w1 = a_addr[1]; |
w1 = a_addr[1]; |
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: |
dup cell+ @ swap @ ; |
dup cell+ @ swap @ ; |
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cell+ ( a_addr1 -- a_addr2 ) core cell_plus |
cell+ ( a_addr1 -- a_addr2 ) core cell_plus |
"" Increment @i{a-addr1} by the number of address units corresponding to the size of |
""@code{1 cells +}"" |
one cell, to give @i{a-addr2}."" |
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a_addr2 = a_addr1+1; |
a_addr2 = a_addr1+1; |
: |
: |
cell + ; |
cell + ; |
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cells ( n1 -- n2 ) core |
cells ( n1 -- n2 ) core |
"" @i{n2} is the number of address units corresponding to @i{n1} cells."" |
"" @i{n2} is the number of address units of @i{n1} cells."" |
n2 = n1 * sizeof(Cell); |
n2 = n1 * sizeof(Cell); |
: |
: |
[ cell |
[ cell |
Line 1196 n2 = n1 * sizeof(Cell);
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Line 1213 n2 = n1 * sizeof(Cell);
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drop ] ; |
drop ] ; |
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char+ ( c_addr1 -- c_addr2 ) core char_plus |
char+ ( c_addr1 -- c_addr2 ) core char_plus |
"" Increment @i{c-addr1} by the number of address units corresponding to the size of |
""@code{1 chars +}."" |
one char, to give @i{c-addr2}."" |
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c_addr2 = c_addr1 + 1; |
c_addr2 = c_addr1 + 1; |
: |
: |
1+ ; |
1+ ; |
Line 1208 n2 = n1 * sizeof(Char);
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Line 1224 n2 = n1 * sizeof(Char);
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; |
; |
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count ( c_addr1 -- c_addr2 u ) core |
count ( c_addr1 -- c_addr2 u ) core |
"" If @i{c-add1} is the address of a counted string return the length of |
""@i{c-addr2} is the first character and @i{u} the length of the |
the string, @i{u}, and the address of its first character, @i{c-addr2}."" |
counted string at @i{c-addr1}."" |
u = *c_addr1; |
u = *c_addr1; |
c_addr2 = c_addr1+1; |
c_addr2 = c_addr1+1; |
: |
: |
Line 1488 in length.""
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Line 1504 in length.""
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c_addr2 = getenv(cstr(c_addr1,u1,1)); |
c_addr2 = getenv(cstr(c_addr1,u1,1)); |
u2 = (c_addr2 == NULL ? 0 : strlen(c_addr2)); |
u2 = (c_addr2 == NULL ? 0 : strlen(c_addr2)); |
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open-pipe ( c_addr u ntype -- wfileid wior ) gforth open_pipe |
open-pipe ( c_addr u wfam -- wfileid wior ) gforth open_pipe |
wfileid=(Cell)popen(cstr(c_addr,u,1),fileattr[ntype]); /* ~ expansion of 1st arg? */ |
wfileid=(Cell)popen(cstr(c_addr,u,1),fileattr[wfam]); /* ~ expansion of 1st arg? */ |
wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */ |
wior = IOR(wfileid==0); /* !! the man page says that errno is not set reliably */ |
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close-pipe ( wfileid -- wretval wior ) gforth close_pipe |
close-pipe ( wfileid -- wretval wior ) gforth close_pipe |
Line 1503 struct timeval time1;
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Line 1519 struct timeval time1;
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struct timezone zone1; |
struct timezone zone1; |
struct tm *ltime; |
struct tm *ltime; |
gettimeofday(&time1,&zone1); |
gettimeofday(&time1,&zone1); |
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/* !! Single Unix specification: |
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If tzp is not a null pointer, the behaviour is unspecified. */ |
ltime=localtime((time_t *)&time1.tv_sec); |
ltime=localtime((time_t *)&time1.tv_sec); |
nyear =ltime->tm_year+1900; |
nyear =ltime->tm_year+1900; |
nmonth=ltime->tm_mon+1; |
nmonth=ltime->tm_mon+1; |
Line 1523 allocate ( u -- a_addr wior ) memory
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Line 1541 allocate ( u -- a_addr wior ) memory
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contents of the data space is undefined. If the allocation is successful, |
contents of the data space is undefined. If the allocation is successful, |
@i{a-addr} is the start address of the allocated region and @i{wior} |
@i{a-addr} is the start address of the allocated region and @i{wior} |
is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior} |
is 0. If the allocation fails, @i{a-addr} is undefined and @i{wior} |
is an implementation-defined I/O result code."" |
is a non-zero I/O result code."" |
a_addr = (Cell *)malloc(u?u:1); |
a_addr = (Cell *)malloc(u?u:1); |
wior = IOR(a_addr==NULL); |
wior = IOR(a_addr==NULL); |
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free ( a_addr -- wior ) memory |
free ( a_addr -- wior ) memory |
""Return the region of data space starting at @i{a-addr} to the system. |
""Return the region of data space starting at @i{a-addr} to the system. |
The regon must originally have been obtained using @code{allocate} or |
The region must originally have been obtained using @code{allocate} or |
@code{resize}. If the operational is successful, @i{wior} is 0. |
@code{resize}. If the operational is successful, @i{wior} is 0. |
If the operation fails, @i{wior} is an implementation-defined |
If the operation fails, @i{wior} is a non-zero I/O result code."" |
I/O result code."" |
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free(a_addr); |
free(a_addr); |
wior = 0; |
wior = 0; |
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Line 1540 resize ( a_addr1 u -- a_addr2 wior ) mem
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Line 1557 resize ( a_addr1 u -- a_addr2 wior ) mem
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""Change the size of the allocated area at @i{a-addr1} to @i{u} |
""Change the size of the allocated area at @i{a-addr1} to @i{u} |
address units, possibly moving the contents to a different |
address units, possibly moving the contents to a different |
area. @i{a-addr2} is the address of the resulting area. |
area. @i{a-addr2} is the address of the resulting area. |
If the operational is successful, @i{wior} is 0. |
If the operation is successful, @i{wior} is 0. |
If the operation fails, @i{wior} is an implementation-defined |
If the operation fails, @i{wior} is a non-zero |
I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard) |
I/O result code. If @i{a-addr1} is 0, Gforth's (but not the Standard) |
@code{resize} @code{allocate}s @i{u} address units."" |
@code{resize} @code{allocate}s @i{u} address units."" |
/* the following check is not necessary on most OSs, but it is needed |
/* the following check is not necessary on most OSs, but it is needed |
Line 1582 IF_FTOS(FTOS=fp[0]);
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Line 1599 IF_FTOS(FTOS=fp[0]);
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close-file ( wfileid -- wior ) file close_file |
close-file ( wfileid -- wior ) file close_file |
wior = IOR(fclose((FILE *)wfileid)==EOF); |
wior = IOR(fclose((FILE *)wfileid)==EOF); |
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open-file ( c_addr u ntype -- wfileid wior ) file open_file |
open-file ( c_addr u wfam -- wfileid wior ) file open_file |
wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[ntype]); |
wfileid = (Cell)fopen(tilde_cstr(c_addr, u, 1), fileattr[wfam]); |
#if defined(GO32) && defined(MSDOS) |
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if(wfileid && !(ntype & 1)) |
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setbuf((FILE*)wfileid, NULL); |
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#endif |
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wior = IOR(wfileid == 0); |
wior = IOR(wfileid == 0); |
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create-file ( c_addr u ntype -- wfileid wior ) file create_file |
create-file ( c_addr u wfam -- wfileid wior ) file create_file |
Cell fd; |
Cell fd; |
fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[ntype], 0666); |
fd = open(tilde_cstr(c_addr, u, 1), O_CREAT|O_TRUNC|ufileattr[wfam], 0666); |
if (fd != -1) { |
if (fd != -1) { |
wfileid = (Cell)fdopen(fd, fileattr[ntype]); |
wfileid = (Cell)fdopen(fd, fileattr[wfam]); |
#if defined(GO32) && defined(MSDOS) |
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if(wfileid && !(ntype & 1)) |
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setbuf((FILE*)wfileid, NULL); |
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#endif |
|
wior = IOR(wfileid == 0); |
wior = IOR(wfileid == 0); |
} else { |
} else { |
wfileid = 0; |
wfileid = 0; |
Line 1701 PUTC(c);
|
Line 1710 PUTC(c);
|
flush-file ( wfileid -- wior ) file-ext flush_file |
flush-file ( wfileid -- wior ) file-ext flush_file |
wior = IOR(fflush((FILE *) wfileid)==EOF); |
wior = IOR(fflush((FILE *) wfileid)==EOF); |
|
|
file-status ( c_addr u -- ntype wior ) file-ext file_status |
file-status ( c_addr u -- wfam wior ) file-ext file_status |
char *filename=tilde_cstr(c_addr, u, 1); |
char *filename=tilde_cstr(c_addr, u, 1); |
if (access (filename, F_OK) != 0) { |
if (access (filename, F_OK) != 0) { |
ntype=0; |
wfam=0; |
wior=IOR(1); |
wior=IOR(1); |
} |
} |
else if (access (filename, R_OK | W_OK) == 0) { |
else if (access (filename, R_OK | W_OK) == 0) { |
ntype=2; /* r/w */ |
wfam=2; /* r/w */ |
wior=0; |
wior=0; |
} |
} |
else if (access (filename, R_OK) == 0) { |
else if (access (filename, R_OK) == 0) { |
ntype=0; /* r/o */ |
wfam=0; /* r/o */ |
wior=0; |
wior=0; |
} |
} |
else if (access (filename, W_OK) == 0) { |
else if (access (filename, W_OK) == 0) { |
ntype=4; /* w/o */ |
wfam=4; /* w/o */ |
wior=0; |
wior=0; |
} |
} |
else { |
else { |
ntype=1; /* well, we cannot access the file, but better deliver a legal |
wfam=1; /* well, we cannot access the file, but better deliver a legal |
access mode (r/o bin), so we get a decent error later upon open. */ |
access mode (r/o bin), so we get a decent error later upon open. */ |
wior=0; |
wior=0; |
} |
} |
Line 1748 d = r;
|
Line 1757 d = r;
|
#endif |
#endif |
|
|
f! ( r f_addr -- ) float f_store |
f! ( r f_addr -- ) float f_store |
"" Store the floating-point value @i{r} to address @i{f-addr}."" |
""Store @i{r} into the float at address @i{f-addr}."" |
*f_addr = r; |
*f_addr = r; |
|
|
f@ ( f_addr -- r ) float f_fetch |
f@ ( f_addr -- r ) float f_fetch |
"" Fetch floating-point value @i{r} from address @i{f-addr}."" |
""@i{r} is the float at address @i{f-addr}."" |
r = *f_addr; |
r = *f_addr; |
|
|
df@ ( df_addr -- r ) float-ext d_f_fetch |
df@ ( df_addr -- r ) float-ext d_f_fetch |
"" Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}."" |
""Fetch the double-precision IEEE floating-point value @i{r} from the address @i{df-addr}."" |
#ifdef IEEE_FP |
#ifdef IEEE_FP |
r = *df_addr; |
r = *df_addr; |
#else |
#else |
Line 1764 r = *df_addr;
|
Line 1773 r = *df_addr;
|
#endif |
#endif |
|
|
df! ( r df_addr -- ) float-ext d_f_store |
df! ( r df_addr -- ) float-ext d_f_store |
"" Store the double-precision IEEE floating-point value @i{r} to the address @i{df-addr}."" |
""Store @i{r} as double-precision IEEE floating-point value to the |
|
address @i{df-addr}."" |
#ifdef IEEE_FP |
#ifdef IEEE_FP |
*df_addr = r; |
*df_addr = r; |
#else |
#else |
Line 1772 df! ( r df_addr -- ) float-ext d_f_store
|
Line 1782 df! ( r df_addr -- ) float-ext d_f_store
|
#endif |
#endif |
|
|
sf@ ( sf_addr -- r ) float-ext s_f_fetch |
sf@ ( sf_addr -- r ) float-ext s_f_fetch |
"" Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}."" |
""Fetch the single-precision IEEE floating-point value @i{r} from the address @i{sf-addr}."" |
#ifdef IEEE_FP |
#ifdef IEEE_FP |
r = *sf_addr; |
r = *sf_addr; |
#else |
#else |
Line 1780 r = *sf_addr;
|
Line 1790 r = *sf_addr;
|
#endif |
#endif |
|
|
sf! ( r sf_addr -- ) float-ext s_f_store |
sf! ( r sf_addr -- ) float-ext s_f_store |
"" Store the single-precision IEEE floating-point value @i{r} to the address @i{sf-addr}."" |
""Store @i{r} as single-precision IEEE floating-point value to the |
|
address @i{sf-addr}."" |
#ifdef IEEE_FP |
#ifdef IEEE_FP |
*sf_addr = r; |
*sf_addr = r; |
#else |
#else |
Line 1821 fnip ( r1 r2 -- r2 ) gforth f_nip
|
Line 1832 fnip ( r1 r2 -- r2 ) gforth f_nip
|
ftuck ( r1 r2 -- r2 r1 r2 ) gforth f_tuck |
ftuck ( r1 r2 -- r2 r1 r2 ) gforth f_tuck |
|
|
float+ ( f_addr1 -- f_addr2 ) float float_plus |
float+ ( f_addr1 -- f_addr2 ) float float_plus |
"" Increment @i{f-addr1} by the number of address units corresponding to the size of |
""@code{1 floats +}."" |
one floating-point number, to give @i{f-addr2}."" |
|
f_addr2 = f_addr1+1; |
f_addr2 = f_addr1+1; |
|
|
floats ( n1 -- n2 ) float |
floats ( n1 -- n2 ) float |
""@i{n2} is the number of address units corresponding to @i{n1} floating-point numbers."" |
""@i{n2} is the number of address units of @i{n1} floats."" |
n2 = n1*sizeof(Float); |
n2 = n1*sizeof(Float); |
|
|
floor ( r1 -- r2 ) float |
floor ( r1 -- r2 ) float |
Line 1867 f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
|
Line 1877 f2=FLAG(isdigit((unsigned)(sig[0]))!=0);
|
memmove(c_addr,sig,u); |
memmove(c_addr,sig,u); |
|
|
>float ( c_addr u -- flag ) float to_float |
>float ( c_addr u -- flag ) float to_float |
""Attempt to convert the character string @i{c-addr u} to |
""Actual stack effect: ( c_addr u -- r t | f ). Attempt to convert the |
internal floating-point representation. If the string |
character string @i{c-addr u} to internal floating-point |
represents a valid floating-point number @i{r} is placed |
representation. If the string represents a valid floating-point number |
on the floating-point stack and @i{flag} is true. Otherwise, |
@i{r} is placed on the floating-point stack and @i{flag} is |
@i{flag} is false. A string of blanks is a special case |
true. Otherwise, @i{flag} is false. A string of blanks is a special |
and represents the floating-point number 0."" |
case and represents the floating-point number 0."" |
/* real signature: c_addr u -- r t / f */ |
/* real signature: c_addr u -- r t / f */ |
Float r; |
Float r; |
char *number=cstr(c_addr, u, 1); |
char *number=cstr(c_addr, u, 1); |
Line 2021 r2 = atanh(r1);
|
Line 2031 r2 = atanh(r1);
|
r> IF fnegate THEN ; |
r> IF fnegate THEN ; |
|
|
sfloats ( n1 -- n2 ) float-ext s_floats |
sfloats ( n1 -- n2 ) float-ext s_floats |
""@i{n2} is the number of address units corresponding to @i{n1} |
""@i{n2} is the number of address units of @i{n1} |
single-precision IEEE floating-point numbers."" |
single-precision IEEE floating-point numbers."" |
n2 = n1*sizeof(SFloat); |
n2 = n1*sizeof(SFloat); |
|
|
dfloats ( n1 -- n2 ) float-ext d_floats |
dfloats ( n1 -- n2 ) float-ext d_floats |
""@i{n2} is the number of address units corresponding to @i{n1} |
""@i{n2} is the number of address units of @i{n1} |
double-precision IEEE floating-point numbers."" |
double-precision IEEE floating-point numbers."" |
n2 = n1*sizeof(DFloat); |
n2 = n1*sizeof(DFloat); |
|
|
sfaligned ( c_addr -- sf_addr ) float-ext s_f_aligned |
sfaligned ( c_addr -- sf_addr ) float-ext s_f_aligned |
"" @i{sf-addr} is the first single-float-aligned address greater |
""@i{sf-addr} is the first single-float-aligned address greater |
than or equal to @i{c-addr}."" |
than or equal to @i{c-addr}."" |
sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat))); |
sf_addr = (SFloat *)((((Cell)c_addr)+(sizeof(SFloat)-1))&(-sizeof(SFloat))); |
: |
: |
[ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ; |
[ 1 sfloats 1- ] Literal + [ -1 sfloats ] Literal and ; |
|
|
dfaligned ( c_addr -- df_addr ) float-ext d_f_aligned |
dfaligned ( c_addr -- df_addr ) float-ext d_f_aligned |
"" @i{df-addr} is the first double-float-aligned address greater |
""@i{df-addr} is the first double-float-aligned address greater |
than or equal to @i{c-addr}."" |
than or equal to @i{c-addr}."" |
df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat))); |
df_addr = (DFloat *)((((Cell)c_addr)+(sizeof(DFloat)-1))&(-sizeof(DFloat))); |
: |
: |
Line 2118 lp -= sizeof(Float);
|
Line 2128 lp -= sizeof(Float);
|
*(Float *)lp = r; |
*(Float *)lp = r; |
|
|
fpick ( u -- r ) gforth |
fpick ( u -- r ) gforth |
|
""Actually the stack effect is @code{ r0 ... ru u -- r0 ... ru r0 }."" |
r = fp[u+1]; /* +1, because update of fp happens before this fragment */ |
r = fp[u+1]; /* +1, because update of fp happens before this fragment */ |
: |
: |
floats fp@ + f@ ; |
floats fp@ + f@ ; |
Line 2248 char newline[] = {
|
Line 2259 char newline[] = {
|
}; |
}; |
c_addr=newline; |
c_addr=newline; |
u=sizeof(newline); |
u=sizeof(newline); |
|
: |
|
"newline count ; |
|
Create "newline e? crlf [IF] 2 c, $0D c, [ELSE] 1 c, [THEN] $0A c, |
|
|
|
\+os |
|
|
|
utime ( -- dtime ) gforth |
|
""Report the current time in microseconds since some epoch."" |
|
struct timeval time1; |
|
gettimeofday(&time1,NULL); |
|
dtime = timeval2us(&time1); |
|
|
|
cputime ( -- duser dsystem ) gforth |
|
""duser and dsystem are the respective user- and system-level CPU |
|
times used since the start of the Forth system (excluding child |
|
processes), in microseconds (the granularity may be much larger, |
|
however). On platforms without the getrusage call, it reports elapsed |
|
time (since some epoch) for duser and 0 for dsystem."" |
|
#ifdef HAVE_GETRUSAGE |
|
struct rusage usage; |
|
getrusage(RUSAGE_SELF, &usage); |
|
duser = timeval2us(&usage.ru_utime); |
|
dsystem = timeval2us(&usage.ru_stime); |
|
#else |
|
struct timeval time1; |
|
gettimeofday(&time1,NULL); |
|
duser = timeval2us(&time1); |
|
dsystem = (DCell)0; |
|
#endif |
|
|
|
\+ |
|
|
|
\+floating |
|
|
|
v* ( f_addr1 nstride1 f_addr2 nstride2 ucount -- r ) gforth v_star |
|
""dot-product: r=v1*v2. The first element of v1 is at f_addr1, the |
|
next at f_addr1+nstride1 and so on (similar for v2). Both vectors have |
|
ucount elements."" |
|
for (r=0.; ucount>0; ucount--) { |
|
r += *f_addr1 * *f_addr2; |
|
f_addr1 = (Float *)(((Address)f_addr1)+nstride1); |
|
f_addr2 = (Float *)(((Address)f_addr2)+nstride2); |
|
} |
|
: |
|
>r swap 2swap swap 0e r> 0 ?DO |
|
dup f@ over + 2swap dup f@ f* f+ over + 2swap |
|
LOOP 2drop 2drop ; |
|
|
|
faxpy ( ra f_x nstridex f_y nstridey ucount -- ) gforth |
|
""vy=ra*vx+vy"" |
|
for (; ucount>0; ucount--) { |
|
*f_y += ra * *f_x; |
|
f_x = (Float *)(((Address)f_x)+nstridex); |
|
f_y = (Float *)(((Address)f_y)+nstridey); |
|
} |
|
: |
|
>r swap 2swap swap r> 0 ?DO |
|
fdup dup f@ f* over + 2swap dup f@ f+ dup f! over + 2swap |
|
LOOP 2drop 2drop fdrop ; |
|
|
|
\+ |