Agena

2.14.1, October 20, 2018 - Added Algol 68-style compound assignment; i.e., statements like "c +:= 2" which is equivalent to "c := c + 2" or "inc c, 2". The operators supported are +, -, *, /, and %. This is syntactic sugar to the `inc`, `dec`, `mul`, `div` and `mod` statements. - The new function `append` adds a single element to the front of a structure. It works non-destructively. - `sema.open` can now be passed a non-negative integer id. If the id has not yet been created, the function creates it. This allows you to write functions dumping the current semaphore state to a file and re-load it later, see `binio.writechar`, `binio.readchar`, `bytes.tobytes`. - `skycrane.timestamp` now by default returns the time in Daylight Saving Time if active. You can switch this off (always returning Standard Time) by passing the new option `standardtime=true`. - `calc.diff` and `calc.xpdiff` now accept the option `deriv = 0` which just returns the function value at the given point. - The new `calc.softsign` function computes the Softsign function << x -> x/(1 + abs x) >>. It is 40 percent faster than an Agena implementation. - `calc.smoothstep` has been extended to alternatively compute a polynomial which has zero 1st- and 2nd-order derivatives at x = 0 and x = 1. The argument list of the function has also been corrected. - In UNIX based systems, the global and personal initialisation files may also have the filename `agena.ini`. - `os.system` now correctly detects Windows 8.1 and 10. - `columns` could not process registers. This has been changed. - Improved references in the Primer and References, also corrected the Quick Reference. - Some cleaning of error messages with respect to punctuation. - To clear the namespace, the following macros providing backward compatibility to deprecated functions in 2.13 have been finally removed: `rot`, `math.clamp`, `math.symtrunc`. For all the functions removed, check the end of the lib/library file, where you will find fully functioning "emulators". You may add them to your personal agena.ini or .agenainit files. - This release has been Valgrind-checked on x86 Linux to ensure there are no memory leaks.