1 files changed, 48 insertions, 0 deletions
diff --git a/src/libs/libgroff/matherr.c b/src/libs/libgroff/matherr.c
new file mode 100644
index 0000000..a1adbf8
--- /dev/null
+++ b/src/libs/libgroff/matherr.c
@@ -0,0 +1,48 @@
+/* Copyright (C) 1989-2020 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff 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.
+
+groff 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 this program.  If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <math.h>
+#include <errno.h>
+
+#ifdef HAVE_STRUCT_EXCEPTION
+#ifdef TLOSS
+
+int matherr(exc)
+struct exception *exc;
+{
+  switch (exc->type) {
+  case SING:
+  case DOMAIN:
+    errno = EDOM;
+    break;
+  case OVERFLOW:
+  case UNDERFLOW:
+  case TLOSS:
+  case PLOSS:
+    errno = ERANGE;
+    break;
+  }
+  return 1;
+}
+
+#endif /* TLOSS */
+#endif /* HAVE_STRUCT_EXCEPTION */