Changeset c12ec6 in git

Timestamp:

Jun 10, 2014, 4:36:39 PM (10 years ago)

Author:

Hans Schoenemann <hannes@…>

Branches:

(u'fieker-DuVal', '117eb8c30fc9e991c4decca4832b1d19036c4c65')(u'spielwiese', 'fc741b6502fd8a97288eaa3eba6e5220f3c3df87')

Children:

daa036a6a0729f3be61906410e87bf1c23561ab8

Parents:

9a416a9b9549caa479aea5b323723f591221fbd7

Message:

addKernelCmds: alias, order of entries

File:

• Singular/HOWTO.addKernelCmds (modified) (1 diff)

Singular/HOWTO.addKernelCmds

@@ -79 +79 @@
       (including NONE)
 
+Remark: the order of these lines is important:
+  first the interpreter tries a perfect match of the data types,
+  but, if none is found, the second pass tries automatic type conversion
+  starting with the first line:
+  for example: bla(<matrix>,<module>)
+  ,{D(jjBLAH21),   BLA_CMD,   <return type>,  MATRIX_CMD, MATRIX_CMD, ALLOW_PLURAL |ALLOW_RING}
+  ,{D(jjBLAH22),   BLA_CMD,   <return type>,  MODUL_CMD,  MODUL_CMD, ALLOW_PLURAL |ALLOW_RING}
+  would call jjBLAH21, while
+  ,{D(jjBLAH22),   BLA_CMD,   <return type>,  MODUL_CMD,  MODUL_CMD, ALLOW_PLURAL |ALLOW_RING}
+  ,{D(jjBLAH21),   BLA_CMD,   <return type>,  MATRIX_CMD, MATRIX_CMD, ALLOW_PLURAL |ALLOW_RING}
+  would call jjBLAH22.
+  If certain conversions should not be allowed, add a line/several lines like:
+  ,{jjWRONG,   BLA_CMD,   NONE,  MATRIX_CMD, MODUL_CMD, ALLOW_PLURAL |ALLOW_RING}
+  at the end of the block with operations for "bla".
+
+Remark: alias: 0: normal reserved word
+               1: alias for an reserver word: allowed as input, never as output
+               2: outdated alias: allowed as input, never as output,
+                  output a warning at first use