Revise math_1(), math_2(), stub-generating macros, and function tables to
use PyArg_ParseTuple() and properly provide the function name for error
message generation.
Fix pow() docstring for MPW 3.1; had said "power" instead of "pow".
that before) in the previous patch has one problem; rint() is not in
the C math library on all platforms (e.g. not for VC++). Make it
conditional on HAVE_RINT.
Fix overflow bug in ldexp(x, exp). The 'exp' argument maps to a C int for the
math library call [double ldexp(double, int)], however the 'd'
PyArg_ParseTuple formatter was used to yield a double, which was subsequently
cast to an int. This could overflow.
[GvR: mysteriously, on Solaris 2.7, ldexp(1, 2147483647) returns Inf
while ldexp(1, 2147483646) raises OverflowError; this seems a bug in
the math library (it also takes a real long time to compute the
Inf outcome). Does this point to a bug in the CHECK() macro? It
should have discovered that the result was outside the HUGE_VAL range.]
