moodle/lib/evalmath/readme_moodle.txt
Juan Pablo de Castro 6aa8a3b6d0 MDL-14274 lib/evalmath: support of conditional math in formulas.
- Comparison operators >, ==, <, <=, >=
- "if(condition, valueiftrue, valueif false)" function.

(amended to keep non-related lines unmodified - whitespace & indent)
2018-06-26 10:25:44 +02:00

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Description of EvalMath library import into Moodle
Our changes:
* implicit multiplication (optionally) not allowed
* new custom calc emulation functions
* removed (optionally) e and pi constants - not used in calc
* removed sample files
* Fix a == FALSE that should have been === FALSE.
* added $expecting_op = true; for branch where a function with no operands is found to fix bug.
* moved pattern for func and var names into a static var
* made a function to test a string to see if it is a valid func or var name.
* localized strings
* added round, ceil and floor functions.
* EvalMath::EvalMath() changed to EvalMath::__construct() and there is a new EvalMath::EvalMath
function to maintain backwards compatibility
To see all changes diff against version 1.1, available from:
http://www.phpclasses.org/browse/package/2695.html
skodak, Tim Hunt
Changes by Juan Pablo de Castro (MDL-14274):
* operators >,<,>=,<=,== added.
* function if[thenelse](condition, true_value, false_value)