updated libquantum 0.9.1 source files

error.c

@@ -0,0 +1,82 @@
+/* error.c: Error handling
+
+   Copyright 2005 Bjoern Butscher, Hendrik Weimer
+
+   This file is part of libquantum
+
+   libquantum is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License,
+   or (at your option) any later version.
+
+   libquantum is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with libquantum; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA
+
+*/
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "error.h"
+
+void *
+quantum_error_handler(void *f(int))
+{
+  static void *errfunc = 0;
+  
+  if(f)
+    errfunc = f;
+
+  return errfunc;
+}
+
+const char *
+quantum_strerr(int errno)
+{
+  switch(errno)
+    {
+    case QUANTUM_SUCCESS:
+      return "success";
+    case QUANTUM_FAILURE:
+      return "failure";
+    case QUANTUM_ENOMEM:
+      return "malloc failed";
+    case QUANTUM_EMLARGE:
+      return "matrix too large";
+    case QUANTUM_EMSIZE:
+      return "wrong matrix size";
+    case QUANTUM_EHASHFULL:
+      return "hash table full";
+    case QUANTUM_EMCMATRIX:
+      return "single-column matrix expected";
+    case QUANTUM_EOPCODE:
+      return "unknown opcode";
+    default:
+      return "unknown error code";
+    }
+}
+
+void
+quantum_error(int errno)
+{
+  void (*p)(int);
+  p = quantum_error_handler(0);
+  
+  if(p)
+    p(errno);
+  else
+    {
+      fflush(stdout);
+      fprintf(stderr, "ERROR: %s\n", quantum_strerr(errno));
+      fflush(stderr);
+
+      abort();
+    }
+}