What's new in 1.0

• Workspace and history
• Expressions and editing
• Results and formatting
• New functions
• Units
• Appearance and settings

Workspace and history

• Work in tabs and split panes to keep several calculations open side by side.
• Save calculation history between launches and set a history size limit.
• Load your own functions and variables at startup.
• Choose a keypad preset or build a custom keypad.
• Show or hide the main menu. The result display now has a right-click context menu with an entry for the main menu.
• Re-edit an earlier expression and recalculate all the expressions below it.
• Check for updates from within the app.

Expressions and editing

• Use lists and matrices in expressions.
• See the interpreted expression alongside the result, with implicit multiplication made explicit.
• Write integer powers with superscript digits.
• Use √, ∛, Σ (summation), and π as aliases. The ~ operator is an alias for not().
• More symbol aliases are accepted for addition, subtraction, multiplication, and division.
• Autocomplete suggestions now show category icons.
• Pasted numbers are automatically formatted to match the global Number Format setting.
• Insert constants and formula book entries with their units included.

Results and formatting

• Show a calculation in several result formats at once. Number-format choices include Indian 3-2-2 digit grouping.
• Show rational results as fractions, or use sexagesimal notation for angles and time.
• Show angles as multiples of pi in radian mode or through an explicit conversion.
• Choose how complex numbers are displayed, with polar forms and options for the imaginary unit.
• Set a custom precision with the Custom... option.
• Choose from five rounding modes.
• Changing the primary result format updates only the last expression. Earlier history entries keep their formatting.

New functions

• Integer arithmetic: powmod for modular exponentiation, emod for Euclidean modulo, lcm for least common multiples, and popcount for counting set bits.
• Number formatting: binpad, octpad, and hexpad for padded binary, octal, and hexadecimal output. Use sci and eng for scientific and engineering notation.
• Random numbers: rand and randint generate random decimals and integers.
• Dates and time: datetime and epoch convert between date/time values and Unix timestamps.
• Summation: sigma, also written as Σ.
• Complex numbers: conj for complex conjugates and cis for constructing a complex number from an angle. Choose rectangular, exponential, or phasor output with rectform, expform, and phasorform.
• IEEE 754: ieee754_round_* rounds to a floating-point format, and ieee754_*_residual(x) returns the rounding residual. Both families support half, float, double, and quad.
• Chemistry: molmass, mass, and molarity for molar mass, mass from an amount of substance, and solution molarity.
• Linear algebra and data: List and matrix support with cols, corrp, corrs, covp, covs, cross, det, dot, flatten, inv, norm, rank, rows, shape, trace, and transpose.
• Statistics: stdevp, stdevs, varp, vars, and mad, with list and matrix support.

Units

Use square brackets to identify units explicitly in expressions, such as [m] or [s]. New units and aliases include:

• Angles: gradian (gon), turn (tr, pla), revolution (rev), degree (°), arcmin (′), and arcsec (″).
• Time: Julian century (cy_jul).
• Area and mass: hectare and tonne.
• Speed: kph and mph.
• Energy: quad, equal to 10¹⁵ [Btu].

Appearance and settings

• Choose from more built-in themes or create a custom theme.
• Interface scaling now applies to the expression editor too.

Contributors

Thank you to the authors who have contributed since November 30, 2016.

Helder Correia, Felix Krull, Mikko Syrjä, Tey / Teyut, Samuel Gaist, Hadrien Theveneau, Pol Welter, Matthew Di Nardo, Chris Roberts, Alan Birtles, Chuvke, Jean-Michel Frouin, Jonas Nyrup, Nikolay Zlatev, Roger Sachan, rewq.