Release 0.9.9 "Headrest" - Ranges

[c3d]

This release introduces four range types to perform computations on ranges, and fixes serious graphical regressions that remained undetected by the test suite.

New features

• Three range types, known as interval (1…3), delta range (2±1) and percent range (2±50%), for which arithmetic and most operations have been implemented.
• An uncertain type (2±3σ), for which arithmetic and operations are not implemented yet.
• A new flag, ShowAsDecimal, presents integers and fractions using a decimal format. This is useful for people working in banking, who can use 2 FIX mode for all values. In that mode, 50 will display as 50.00, and 3/4 will display as 0.75. The Show command still shows the original value.
• The simulator now strips CR/LF when pasting on Windows.
• The ^ operator now operates on arrays

Bug fixes

• The image comparison code has been broken since January. As a result, various regression regarding graphical output remained undetected.
• One particular case is the generation of incorrect BMP files after the default format for graphic objects was switched to bitmap.
• A possible crash was eliminated when converting a number to integer, to fraction or to decimal.

Improvements

• The σ (used for uncertain numbers) replaces ρ (unused at the moment) on the keyboard in alpha mode.

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This discussion was created from the release Release 0.9.9 "Headrest" - Ranges.