We now compute the value of the mantissa in double (instead of float)
to limit conversion error occuring for big numbers.
Change-Id: Ia61c052f0bc4a9196c53e2c7900eb48e3343d39c
New way of drawing sigma sign. Only a single branch is stored. The full
symbol is created by mirroring half a symbol.
Change-Id: I0fc32393203e51578c88b01125a907d402291534
Changed the look of the integral symbol and the positions of the upper
and lower bounds. Added a drawing of the window to explain the meaning
of various margins.
Change-Id: I3ffc07848dc9ad68dce3c0e01853d548e31dd152
Parenthesis collapsing is no longer handled by LeftParenthesisLayout and
RightParenthesisLayout, but by ParenthesisLayout itself.
Change-Id: I6797cd40ee02881544e01e9b88f31a597c51d179
Fraction are now only collapsed if they are the first thing to be
collapsed or if a parenthesis is open.
Change-Id: Ie7f3a99498b9981dff70221efd7de6bee6d0c379
When leaving the Calculation app, the layout currently being edited is
now stored in a buffer, to be restored when the app resumes.
Change-Id: I59c16e18f7193bdcbb36888b54cb2722897f85f5
Added some methods to manipulate the layout of a LayoutField from an
ExpressionField, like storing into and restoring from a buffer.
Change-Id: I7b7b5b53626f19237a5215bd196e897a518e9577
Created function Layout::LayoutFromAddress, which creates in the pool a layout
that has been stored in a buffer. Functionally identical to
Expression::ExpressionFromAddress.
Change-Id: I204e6b7d42f259ef2732563aa2a168a644060867
The cacheBuffer from EditExpressionController has been moved in the
snapshot, to act as a zone where layout information can be kept while
the app is inactive.
Change-Id: If9206abf77f37d6b984826e5f09658848381a75f
Changed TextFieldFunctionTitleCell::reloadCell to solve an issue with
the alignment of a function's name and definition when changing the
expression :
- typing u_n = (1/3)/2 then changing to u_n = 1/(2/3) without erasing
the formula first. u_n would no longer be aligned with the = sign.
Change-Id: Ib58e4220dc67c77639272c7ea784418bddffb432
SequenceTitleCell::reloadCell now triggers a layoutSubviews, causing the
vertical alignment to be recomputed. This solves issues regarding the
alignment of a sequence's name and definition, such as :
- typing u_n = v_n ; v_n would be displayed above u_n
- typing u_n = (1/3)/2 then changing to u_n = 1/(2/3) without erasing
the formula first. u_n would no longer be aligned with the = sign.
Change-Id: I4a771d96ea79e42e2f4822e93f9f1cbbcf867610
LayoutField does no redraw its content on every occasion anymore. This
allows the input window in Calculation to not scroll to the beginning
when writing an overly long formula.
Change-Id: I14276828884035463b0a6438bfca4dd76c7f5057
New tests compute derivatives while replacing symbols with their definitions or undefined, as the device does.
Change-Id: I99179bf6540182ff929938fb96a00a1ed2fbcf49
Derivation now computes as expected on logarithms, as long as their base is not a function of the derivation variable.
Change-Id: Ia56da1c1151c0ddf3887be84ddb4bd02664c5188
Added a method unaryFunctionDifferential to ExpressionNode and Expression, to be implemented by subclasses representing unary functions.
Added a function derivateUnaryFunction to Derivative, to factor (f°g)' -> g' * f'°g.
Change-Id: Id1780f1082ccd001f1282fe4ddfff2b7055d3a27
Derivation now propagates to powers as expected, whether the base, the exponent, or both are functions of the variable. This also makes division derive as intended.
Change-Id: I51cbd5f7ec9f6aaa1df068625bbda1437941fa08
Derivation propagates as expected on multiplications (but not power). Some tests involving diff had to be updated to reflect that behaviour.
Change-Id: Ifa32031bc37a156c18d296757bcdd6ccdb0ea43e
Number's subclasses, with the exception of Undefined and Unreal, derive as zero. Symbols derive as expected. Derivation propagates as expected on additions.
Change-Id: Icedbb1dfac8099347a19c14bf2537011b2e8b199
This method is to be implemented by derivable expression subclasses, for use in Derivative::shallowReduce. It performs the calculation for the derivative, and returns whether calculations happened.
Change-Id: I13cdb131e2044578392f5178a9f389314c1c4c8a
