sciteco/expressions.cpp, branch v2.5.2

autoconf preparation: move everything into src/ subdir

2012-12-04T21:07:08+00:00

expressions.find_op(), can be used test whether we are in a loop (although that's inefficient)

2012-11-14T04:39:42+00:00

various arithmetic expression fixes: SUB must have higher precedence than ADD; fixed num_sign (unary minus) handling

2012-11-12T05:26:09+00:00

simplified/cleaned up undo operations on value stack

2012-11-07T19:12:18+00:00

 * special undo tokens are private to the ValueStack class and automatically parameterized
 * undo_push() and undo_pop() methods hide the internals of pushing the undo tokens

fixed "," operator

2012-11-07T18:08:15+00:00

instead of pushing a special number (which wasn't that special...), use a dedicated "new" operator which does not count as an argument operator, nor does it count as an ordinary operator and it is popped before any number (and "number" operator) is pushed

expression stack fixes and some arithmetic commands

2012-11-07T07:10:47+00:00

expression stack based on THECO's ArithmeticStack

2012-11-07T06:22:35+00:00