multiplications where appropriate.

the 16-to-32-bit refactoring.

solving.

these functions.

so that their initialisation order ensures they have the proper values. Add
unit tests for these constants.

and simplify the Remez code accordingly.

Remez exchange program.

multiplications by integers, especially powers of two.

we can create our own high-precision polynomial approximations.

code shortcut, fix bugs in the addition and subtraction, another one in
the multiplication code, and add new unit tests for most of these.

to 32 bigits.

and add a test suite check for unary minus.

multiplication.

and the OS X port.

to ios-image.cpp, but disable it on OS X because UIKit isn't available.

expected.

This is useful when doing several asserts in one loop, for instance: there
isn't always a way to deduce the loop index from the assert failure, so
these macros allow the user to give more context information.

and slightly tweak the API syntax.