--- gforth/prim	2005/08/02 12:00:51	1.174
+++ gforth/prim	2006/02/04 22:09:11	1.188
@@ -1,6 +1,6 @@
 \ Gforth primitives
 
-\ Copyright (C) 1995,1996,1997,1998,2000,2003,2004 Free Software Foundation, Inc.
+\ Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2005 Free Software Foundation, Inc.
 
 \ This file is part of Gforth.
 
@@ -719,6 +719,15 @@ c2 = toupper(c1);
 :
  dup [char] a - [ char z char a - 1 + ] Literal u<  bl and - ;
 
+capscompare	( c_addr1 u1 c_addr2 u2 -- n )	string
+""Compare two strings lexicographically. If they are equal, @i{n} is 0; if
+the first string is smaller, @i{n} is -1; if the first string is larger, @i{n}
+is 1. Currently this is based on the machine's character
+comparison. In the future, this may change to consider the current
+locale and its collation order.""
+/* close ' to keep fontify happy */ 
+n = capscompare(c_addr1, u1, c_addr2, u2);
+
 /string	( c_addr1 u1 n -- c_addr2 u2 )	string	slash_string
 ""Adjust the string specified by @i{c-addr1, u1} to remove @i{n}
 characters from the start of the string.""
@@ -873,7 +882,7 @@ division by 2 (note that @code{/} not ne
 n2 = n1>>1;
 :
  dup MINI and IF 1 ELSE 0 THEN
- [ bits/byte cell * 1- ] literal 
+ [ bits/char cell * 1- ] literal 
  0 DO 2* swap dup 2* >r MINI and 
      IF 1 ELSE 0 THEN or r> swap
  LOOP nip ;
@@ -1229,7 +1238,7 @@ useraddr	( #u -- a_addr )	new
 a_addr = (Cell *)(up+u);
 
 up!	( a_addr -- )	gforth	up_store
-UP=up=(char *)a_addr;
+gforth_UP=up=(char *)a_addr;
 :
  up ! ;
 Variable UP
@@ -1645,7 +1654,7 @@ n = key((FILE*)wfileid);
 n = key(stdin);
 #endif
 
-key?-file	( wfileid -- n )		facility	key_q_file
+key?-file	( wfileid -- n )	        gforth	key_q_file
 #ifdef HAS_FILE
 fflush(stdout);
 n = key_query((FILE*)wfileid);
@@ -1788,11 +1797,11 @@ access the stack itself. The stack point
 variables @code{SP} and @code{FP}.""
 /* This is a first attempt at support for calls to C. This may change in
    the future */
-FP=fp;
-SP=sp;
+gforth_FP=fp;
+gforth_SP=sp;
 ((void (*)())w)();
-sp=SP;
-fp=FP;
+sp=gforth_SP;
+fp=gforth_FP;
 
 \+
 \+file
@@ -2002,6 +2011,9 @@ dsystem = DZERO;
 comparisons(f, r1 r2, f_, r1, r2, gforth, gforth, float, gforth)
 comparisons(f0, r, f_zero_, r, 0., float, gforth, float, gforth)
 
+s>f	( n -- r )		float	s_to_f
+r = n;
+
 d>f	( d -- r )		float	d_to_f
 #ifdef BUGGY_LL_D2F
 extern double ldexp(double x, int exp);
@@ -2022,6 +2034,9 @@ f>d	( r -- d )		float	f_to_d
 extern DCell double2ll(Float r);
 d = double2ll(r);
 
+f>s	( r -- n )		float	f_to_s
+n = (Cell)r;
+
 f!	( r f_addr -- )	float	f_store
 ""Store @i{r} into the float at address @i{f-addr}.""
 *f_addr = r;
@@ -2080,6 +2095,18 @@ f**	( r1 r2 -- r3 )	float-ext	f_star_sta
 ""@i{r3} is @i{r1} raised to the @i{r2}th power.""
 r3 = pow(r1,r2);
 
+fm*	( r1 n -- r2 )	gforth	fm_star
+r2 = r1*n;
+
+fm/	( r1 n -- r2 )	gforth	fm_slash
+r2 = r1/n;
+
+fm*/	( r1 n1 n2 -- r2 )	gforth	fm_star_slash
+r2 = (r1*n1)/n2;
+
+f**2	( r1 -- r2 )	gforth	fm_square
+r2 = r1*r1;
+
 fnegate	( r1 -- r2 )	float	f_negate
 r2 = - r1;
 
@@ -2422,9 +2449,33 @@ u3 = 0;
 #endif
 
 wcall	( ... u -- ... )	gforth
-FP=fp;
-sp=(Cell*)(SYSCALL(Cell*(*)(Cell *, void *))u)(sp, &FP);
-fp=FP;
+gforth_FP=fp;
+sp=(Cell*)(SYSCALL(Cell*(*)(Cell *, void *))u)(sp, &gforth_FP);
+fp=gforth_FP;
+
+uw@ ( c_addr -- u )	gforth u_w_fetch
+""@i{u} is the zero-extended 16-bit value stored at @i{c_addr}.""
+u = *(UWyde*)(c_addr);
+
+sw@ ( c_addr -- n )	gforth s_w_fetch
+""@i{n} is the sign-extended 16-bit value stored at @i{c_addr}.""
+n = *(Wyde*)(c_addr);
+
+w! ( w c_addr -- )	gforth w_store
+""Store the bottom 16 bits of @i{w} at @i{c_addr}.""
+*(Wyde*)(c_addr) = w;
+
+ul@ ( c_addr -- u )	gforth u_l_fetch
+""@i{u} is the zero-extended 32-bit value stored at @i{c_addr}.""
+u = *(UTetrabyte*)(c_addr);
+
+sl@ ( c_addr -- n )	gforth s_l_fetch
+""@i{n} is the sign-extended 32-bit value stored at @i{c_addr}.""
+n = *(Tetrabyte*)(c_addr);
+
+l! ( w c_addr -- )	gforth l_store
+""Store the bottom 32 bits of @i{w} at @i{c_addr}.""
+*(Tetrabyte*)(c_addr) = w;
 
 \+FFCALL
 
@@ -2529,7 +2580,7 @@ REST_REGS
 c_addr = prv;
 
 alloc-callback	( a_ip -- c_addr )	gforth	alloc_callback
-c_addr = (char *)alloc_callback(engine_callback, (Xt *)a_ip);
+c_addr = (char *)alloc_callback(gforth_callback, (Xt *)a_ip);
 
 va-start-void	( -- )	gforth	va_start_void
 va_start_void(clist);
@@ -2598,6 +2649,99 @@ va_return_double(clist, r);
 return 0;
 
 \+
+
+\+LIBFFI
+
+ffi-type ( n -- a_type )	gforth ffi_type
+static void* ffi_types[] =
+    { &ffi_type_void,
+      &ffi_type_uint8, &ffi_type_sint8,
+      &ffi_type_uint16, &ffi_type_sint16,
+      &ffi_type_uint32, &ffi_type_sint32,
+      &ffi_type_uint64, &ffi_type_sint64,
+      &ffi_type_float, &ffi_type_double, &ffi_type_longdouble,
+      &ffi_type_pointer };
+a_type = ffi_types[n];
+
+ffi-size ( n1 -- n2 )	gforth ffi_size
+static int ffi_sizes[] =
+    { sizeof(ffi_cif), sizeof(ffi_closure) };
+n2 = ffi_sizes[n1];
+
+ffi-prep-cif ( a_atypes n a_rtype a_cif -- w )	gforth ffi_prep_cif
+w = ffi_prep_cif(a_cif, FFI_DEFAULT_ABI, n, a_rtype, a_atypes);
+
+ffi-call ( a_avalues a_rvalue a_ip a_cif -- )	gforth ffi_call
+SAVE_REGS
+ffi_call(a_cif, a_ip, a_rvalue, a_avalues);
+REST_REGS
+
+ffi-prep-closure ( a_ip a_cif a_closure -- w )	gforth ffi_prep_closure
+w = ffi_prep_closure(a_closure, a_cif, gforth_callback, a_ip);
+
+ffi-2@ ( a_addr -- d )	gforth ffi_2fetch
+#ifdef BUGGY_LONG_LONG
+DLO_IS(d, (Cell*)(*a_addr));
+DHI_IS(d, 0);
+#else
+d = *(DCell*)(a_addr);
+#endif
+
+ffi-2! ( d a_addr -- )	gforth ffi_2store
+#ifdef BUGGY_LONG_LONG
+*(Cell*)(a_addr) = DLO(d);
+#else
+*(DCell*)(a_addr) = d;
+#endif
+
+ffi-arg-int ( -- w )	gforth ffi_arg_int
+w = *(int *)(*clist++);
+
+ffi-arg-longlong ( -- d )	gforth ffi_arg_longlong
+#ifdef BUGGY_LONG_LONG
+DLO_IS(d, (Cell*)(*clist++));
+DHI_IS(d, 0);
+#else
+d = *(DCell*)(*clist++);
+#endif
+
+ffi-arg-ptr ( -- c_addr )	gforth ffi_arg_ptr
+c_addr = *(char **)(*clist++);
+
+ffi-arg-float ( -- r )	gforth ffi_arg_float
+r = *(float*)(*clist++);
+
+ffi-arg-double ( -- r )	gforth ffi_arg_double
+r = *(double*)(*clist++);
+
+ffi-ret-void ( -- )	gforth ffi_ret_void
+return 0;
+
+ffi-ret-int ( w -- )	gforth ffi_ret_int
+*(int*)(ritem) = w;
+return 0;
+
+ffi-ret-longlong ( d -- )	gforth ffi_ret_longlong
+#ifdef BUGGY_LONG_LONG
+*(Cell*)(ritem) = DLO(d);
+#else
+*(DCell*)(ritem) = d;
+#endif
+return 0;
+
+ffi-ret-ptr ( c_addr -- )	gforth ffi_ret_ptr
+*(char **)(ritem) = c_addr;
+return 0;
+
+ffi-ret-float ( r -- )	gforth ffi_ret_float
+*(float*)(ritem) = r;
+return 0;
+
+ffi-ret-double ( r -- )	gforth ffi_ret_double
+*(double*)(ritem) = r;
+return 0;
+
+\+
 
 \+OLDCALL