The method getVariables would not correctly remove the parameter from
the list of variables.
e.g. In the expression "box+y×int(z,x,0,1)", when trying to remove x
from the list of variables, the letter x would be removed from the name
"box" instead.
Because of the limitations of the floating-point representation, e^x is
null for x <= 710, causing the nextRoot functions to find roots for it.
To prevent this, we looking for places where a function changes sign, we
actually require the function to take two non-null values of different
signs.
This method is used to remove extraneous empty sapce in the middle of
the window for functions that are discontinuous between their points of
interest.
The general formula for deriving a power makes use of the logarithm,
which often disappears at simplification. However, replacing the symbol
before simplifying can lead to applying an invalid argument to the
logarithm, making the whole expression invalid.
e.g. diff(1/x,x,-2)
If x is replaced by -2 before reducing the power derivative, ln(-2)
will reduce to Unreal, as will the rest of the expression.
When tuning the representative without tuning the prefix, the prefix
would not be reset to its default value, causing a problem for masses,
whose base prefix depend on the representative (k for grams, none for
the rest).
Fixes a crash when typing sqrt(_N) with country set to US.
Change-Id: Iade900de5fb31e06fdfafef34ae27da3f36983fa
In metric, sqrt(N) would be simplified to _N_kg^-0.5_m^-0.5_s instead of
_kg^0.5_m^0.5_s^-1.
We solve this issue by preventing simplification using derived units
in presence of rational exponents.
Change-Id: I97118bb32c963809c8d176b7b297d1682965e9af
In Trigonometry::shallowReduceInverseFunction, the reduction of
atan(1/x) used the hard value of pi instead of its equivalent in the
selected angle unit.
This fixes a bug causing atan(1/tan(40°)) to be equal to π/2-40 instead
of 50.
Change-Id: Ifd7df5cd168fadf3146eee168c0bc2136ea15a7b
Temperatures can be converted to and from degree Celsius and Fahrenheit.
When used in non-trivial calculations, they are always reduced to undef,
as the rules for manipulating relative scales are not well defined.
Change-Id: If59e224a0e7f940b421bc894bbe2279c90f38d04
Implemented std::nextafter to replace hand made one.
Methods next and previous are no longer making the difference between -0
and +0
Change-Id: I42e1a073623b70656d9df954694803840cf3088c
Method characteristicXHalfRange was used to compute the range on which
to display cartesian function in Graph. With the new zoom algorithm,
this method is deprecated.
Change-Id: Ic681fab8d58d0f5628a94302a7b49dacaaa1a6a3
