Add support for division of real operands.

tgt-vvp/eval_real.c

@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #ifdef HAVE_CVS_IDENT
-#ident "$Id: eval_real.c,v 1.6 2003/03/15 04:45:18 steve Exp $"
+#ident "$Id: eval_real.c,v 1.7 2003/03/28 02:33:56 steve Exp $"
 #endif
 
 /*
@@ -77,6 +77,11 @@ static int draw_binary_real(ivl_expr_t exp)
 	    clr_word(r);
 	    break;
 
+	  case '/':
+	    fprintf(vvp_out, "    %%div/wr %d, %d;\n", l, r);
+	    clr_word(r);
+	    break;
+
 	  default:
 	    fprintf(stderr, "XXXX draw_binary_real(%c)\n",
 		    ivl_expr_opcode(exp));
@@ -283,6 +288,9 @@ int draw_eval_real(ivl_expr_t exp)
 
 /*
  * $Log: eval_real.c,v $
+ * Revision 1.7  2003/03/28 02:33:56  steve
+ *  Add support for division of real operands.
+ *
  * Revision 1.6  2003/03/15 04:45:18  steve
  *  Allow real-valued vpi functions to have arguments.
  *

vvp/codes.h

@@ -19,7 +19,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #ifdef HAVE_CVS_IDENT
-#ident "$Id: codes.h,v 1.58 2003/02/27 20:36:29 steve Exp $"
+#ident "$Id: codes.h,v 1.59 2003/03/28 02:33:56 steve Exp $"
 #endif
 
 
@@ -63,6 +63,7 @@ extern bool of_DELAYX(vthread_t thr, vvp_code_t code);
 extern bool of_DISABLE(vthread_t thr, vvp_code_t code);
 extern bool of_DIV(vthread_t thr, vvp_code_t code);
 extern bool of_DIV_S(vthread_t thr, vvp_code_t code);
+extern bool of_DIV_WR(vthread_t thr, vvp_code_t code);
 extern bool of_END(vthread_t thr, vvp_code_t code);
 extern bool of_FORCE(vthread_t thr, vvp_code_t code);
 extern bool of_FORK(vthread_t thr, vvp_code_t code);
@@ -170,6 +171,9 @@ extern vvp_code_t codespace_index(vvp_cpoint_t ptr);
 
 /*
  * $Log: codes.h,v $
+ * Revision 1.59  2003/03/28 02:33:56  steve
+ *  Add support for division of real operands.
+ *
  * Revision 1.58  2003/02/27 20:36:29  steve
  *  Add the cvt/vr instruction.
  *

vvp/compile.cc

@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #ifdef HAVE_CVS_IDENT
-#ident "$Id: compile.cc,v 1.157 2003/03/13 04:36:57 steve Exp $"
+#ident "$Id: compile.cc,v 1.158 2003/03/28 02:33:56 steve Exp $"
 #endif
 
 # include  "arith.h"
@@ -109,6 +109,7 @@ const static struct opcode_table_s opcode_table[] = {
       { "%delayx", of_DELAYX, 1,  {OA_NUMBER,   OA_NONE,     OA_NONE} },
       { "%div",    of_DIV,    3,  {OA_BIT1,     OA_BIT2,     OA_NUMBER} },
       { "%div/s",  of_DIV_S,  3,  {OA_BIT1,     OA_BIT2,     OA_NUMBER} },
+      { "%div/wr", of_DIV_WR, 2,  {OA_BIT1,     OA_BIT2,     OA_NONE} },
       { "%end",    of_END,    0,  {OA_NONE,     OA_NONE,     OA_NONE} },
       { "%force",  of_FORCE,  2,  {OA_FUNC_PTR, OA_BIT1,     OA_NONE} },
       { "%inv",    of_INV,    2,  {OA_BIT1,     OA_BIT2,     OA_NONE} },
@@ -1527,6 +1528,9 @@ void compile_param_string(char*label, char*name, char*str, char*value)
 
 /*
  * $Log: compile.cc,v $
+ * Revision 1.158  2003/03/28 02:33:56  steve
+ *  Add support for division of real operands.
+ *
  * Revision 1.157  2003/03/13 04:36:57  steve
  *  Remove the obsolete functor delete functions.
  *

vvp/opcodes.txt

@@ -1,7 +1,7 @@
 /*
  * Copyright (c) 2001-2003 Stephen Williams (steve@icarus.com)
  *
- *  $Id: opcodes.txt,v 1.50 2003/02/27 20:36:29 steve Exp $
+ *  $Id: opcodes.txt,v 1.51 2003/03/28 02:33:56 steve Exp $
  */
 
 
@@ -226,6 +226,12 @@ the bits in either vector are x or z, the entire result is x.
 The %div/s instruction is the same as %div, but does signed division.
 
 
+* %div/wr <bit-l>, <bit-r>
+
+This opcode divides the left operand by the right operand. If the
+right operand is 0, then the result is NaN.
+
+
 * %force <fofu-label>, <width>
 
 Activate a force represented by the force functors <fofu-label>, which

vvp/vthread.cc

@@ -17,7 +17,7 @@
  *    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
  */
 #ifdef HAVE_CVS_IDENT
-#ident "$Id: vthread.cc,v 1.105 2003/03/13 04:36:57 steve Exp $"
+#ident "$Id: vthread.cc,v 1.106 2003/03/28 02:33:57 steve Exp $"
 #endif
 
 # include  "vthread.h"
@@ -1238,6 +1238,15 @@ bool of_DIV_S(vthread_t thr, vvp_code_t cp)
       return true;
 }
 
+bool of_DIV_WR(vthread_t thr, vvp_code_t cp)
+{
+      double l = thr->words[cp->bit_idx[0]].w_real;
+      double r = thr->words[cp->bit_idx[1]].w_real;
+      thr->words[cp->bit_idx[0]].w_real = l / r;
+
+      return true;
+}
+
 /*
  * This terminates the current thread. If there is a parent who is
  * waiting for me to die, then I schedule it. At any rate, I mark
@@ -2675,6 +2684,9 @@ bool of_CALL_UFUNC(vthread_t thr, vvp_code_t cp)
 
 /*
  * $Log: vthread.cc,v $
+ * Revision 1.106  2003/03/28 02:33:57  steve
+ *  Add support for division of real operands.
+ *
  * Revision 1.105  2003/03/13 04:36:57  steve
  *  Remove the obsolete functor delete functions.
  *