newLISP® v.10.4.3 Stable Release rev 2012-5-7

This stable maintenance release fixes minor bugs and adds new functions in the math and statistics area.

Release 10.4.2 was released on May 2nd, 2012 and version 10.4.3 on May 7th fixing critical bugs in seek and close file operations.

Additions and changes

• A new set function union works like (unique (append ... )).
• Two new predicates even? and odd? test the parity of integers.
• The new prob-t function returns the one-tailed probablitiy of a Student's t statistic to be equal or greater than the observed value.
• The new prob-f function returns the probablitiy of F statistic to be equal or greater than the observed value.
• The new crit-t function calculates the critical value of Student's t for a given one-tailed probability.
• The new crit-f function calculates the critical value of F for a given probability level.
• The prob-z and crit-z functions now handle probabilities less than 0.5 for negative Z-values.
• The new corr function calculates a Pearson product-moment correlation coefficient between two variables.
• The new stats function calculates some basic statistics for a data vector.
• The new t-test function performs a Sudent's t-test for dependent and independent date samples.
• An additional true flag in the char function can turn on 8-bit byte indexing and translation instead of multibyte UTF-8 indexing and translation in UTF-8 enabed versions of newLISP.
• A true flag in the file? forces the return value to the name string of the file, if it exists.
• Versions compiled for the new extended FFI now show "libffi" in the banner.
• Better mean-value adherence of the normal function.
• In the extended ffi the char* type will now only accept strings as arguments. For string or buffer integer addresses void* must be used.
• import now can load a library without importing a function. This is necessary on Mac OSX, Linux and other Unix when external functions are referenced from an imported function and the library is not loaded automatically.

Modules

• newlispdoc now outputs a UTF-8 meta tag in the HTML header.
• A new module gsl.lsp imports SV, QR and Cholesky decomposition and solver functions from the GNU Scientific Library GSL. Both SV and QR can handle rectangular non-square matrices for decomposition of A and solving Ax = b for x.
• Updated plot.lsp now also has a plot:XY command and has been added to the standard modules in the source and binary distributions.

Bug fixes

• The day-of-year value in date-list now starts with 1 instead of 0. The previous version made the same change for the now function.
• The command-event function now trims trailing line-feed characters in all compile and platform flavors. Previously only UNIX and readline lib enabled versions would trim the string passed by command-event.
• A fix for pack when packing structures made with struct in 64-bit newLISP.
• A fix for seek when used after read-line.
• close had a memory leak introduced in 10.4.0.

Compatibility with previous versions

Except for bug fixes and behavior of char* argument types in the extended import ffi interface, this version is fully compatible with previous versions.