Different languages and contexts have different default behaviors for modulo
where one or both operands are negative. "The remainder of an integer division"
is underspecified. As such, clarification is in order.
Co-authored-by: Aaron Franke <arnfranke@yahoo.com>
Co-authored-by: Hugo Locurcio <hugo.locurcio@hugo.pro>
There were 4 pages documentation pages still using deg2rad(),
which have been substituted by deg_to_rad() and the examples
tested against 4.0.X.
There was 1 usage of C# Deg2Rad(), now DegToRad().
Some dependent comments and output have been updated accordingly:
(deg_to_rad() is implemented in the Math core functions, not in
the Expressions class), plus some float precission fixes, at
least on my architecture.
Only one mention of rad2deg() was found in all docs.
Fixes#7247
