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资源说明：Expose C/C++ structs to numpy
==================
Nupy C/C++ Library
==================
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Expose C/C++ structs to numpy
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SYNOPSIS
========
#define nupyStruct(T) begin a declaration of struct ``T``
#define nupyEnd() end a declaration
#define nupyBase(T) declare a base class ``T`` - C++ only
#define nupyM(M) declare a member ``M``
#define nupyFAM(M) declare flexible array member ``M``
DESCRIPTION
===========
Nupy is a simple set of C++ macros to generate a dtype string for
a class or a struct.
For example, C/C++ ``struct Line``
::
struct Line
{
double start[2];
double end [2];
char note [16];
};
can be "decorated" by ``nupyStruct(Line)`` and ``nupyEnd()``
macros and all members can be wrapped by ``nupyM(m)``
::
struct Line
{
nupyStruct(Line)
double nupyM(start) [2];
double nupyM(end ) [2];
char nupyM(note ) [16];
nupyEnd()
};
In plain C ``nupyStruct(T)`` and ``nupyEnd()`` evaluate to nothing
and ``nupyM(M)`` evaluates to ``M`` producing a struct identical
to the original.
In C++, the second definition generates ``nupy_dtype`` static
member function
::
int Line::nupy_dtype(const char* str, size_t bufsz, size_t famsz = 0);
If ``bufsz`` is big enough, the function copies ``Line``'s dtype
to ``buf`` producing a string similar to
::
"[('start','
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