--- loncom/homework/caparesponse/capa.i	2004/03/12 21:06:19	1.3
+++ loncom/homework/caparesponse/capa.i	2004/11/16 23:37:40	1.6
@@ -3,8 +3,9 @@
 
 %}
 
-%typemap(perl5,in) char** reterror (char** cvalue) {
+%typemap(perl5,in) char** reterror (char* cvalue) {
   SV* tempsv;
+  int len;
   if (!SvROK($source)) {
     croak("expected a reference\n");
   }
@@ -12,10 +13,8 @@
   if ((!SvPOK(tempsv))) {
     croak("expected a double reference\n");
   }
-  int len;
-  char *temp=SvPV(tempsv,len);
-  cvalue = &temp;
-  $target = cvalue;
+  cvalue = SvPV(tempsv,len);
+  $target = &cvalue;
 }
 
 %typemap(perl5,argout) char ** reterror {
@@ -26,9 +25,36 @@
     free(*$source);
   }
 }
+
+%typemap(perl5,in) double* scaled {
+  double *temp;
+  if (!SvROK($source)) {
+    croak("expected a reference\n");
+  }
+  SV* tempsv;
+  tempsv = SvRV($source);
+  if (!SvPOK(tempsv) && !SvIOK(tempsv) && !SvNOK(tempsv)) {
+    croak("expected a single reference to a scalar\n");
+  }
+  temp = malloc(sizeof(double));
+  *temp = SvNV(tempsv);
+  $target = temp;
+}
+
+%typemap(perl5,argout) double* scaled {
+  SV *tempsv;
+  tempsv = SvRV($arg);
+  sv_setnv(tempsv, *$source);
+  free($source);
+}
+
+
 extern int caparesponse_capa_check_answer(char *response,char *correct,
 				   int type,int tol_type,double tolerance,
 				   int sig_lbound,int sig_ubound, 
 				   char *ans_fmt, char *unit_str,
 				   int calc, char *id_list, char *pts_list,
 				   char *rndseed, char** reterror);
+
+extern int caparesponse_get_real_response(char* unit_str, char* answer,
+					  double* scaled);