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-rw-r--r--amforth-6.5/common/lib/forth2012/core-ext/exceptions.frt15
1 files changed, 15 insertions, 0 deletions
diff --git a/amforth-6.5/common/lib/forth2012/core-ext/exceptions.frt b/amforth-6.5/common/lib/forth2012/core-ext/exceptions.frt
new file mode 100644
index 0000000..ec175a0
--- /dev/null
+++ b/amforth-6.5/common/lib/forth2012/core-ext/exceptions.frt
@@ -0,0 +1,15 @@
+\ ******************************************
+\ some exceptions
+\ ******************************************
+
+: ?throw ( f exc -- )
+ swap if throw then drop
+;
+
+: ?comp ( -- )
+ state @ 0= -&14 ?throw
+;
+
+: ?pairs ( n1 n2 -- )
+ - -&22 ?throw
+;