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Source.Python/src/thirdparty/python_linux/include/pymacro.h at master · srpg/Source.Python · GitHub
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pymacro.h
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Source.Python
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src
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thirdparty
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python_linux
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include
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pymacro.h
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#ifndef
Py_PYMACRO_H
#define
Py_PYMACRO_H
/* Minimum value between x and y */
#define
Py_MIN
(
x
,
y
) (((x) > (y)) ? (y) : (x))
/* Maximum value between x and y */
#define
Py_MAX
(
x
,
y
) (((x) > (y)) ? (x) : (y))
/* Absolute value of the number x */
#define
Py_ABS
(
x
) ((x) < 0 ? -(x) : (x))
#define
_Py_XSTRINGIFY
(
x
) #x
/* Convert the argument to a string. For example, Py_STRINGIFY(123) is replaced
with "123" by the preprocessor. Defines are also replaced by their value.
For example Py_STRINGIFY(__LINE__) is replaced by the line number, not
by "__LINE__". */
#define
Py_STRINGIFY
(
x
) _Py_XSTRINGIFY(x)
/* Get the size of a structure member in bytes */
#define
Py_MEMBER_SIZE
(
type
,
member
) sizeof(((type *)0)->member)
/* Argument must be a char or an int in [-128, 127] or [0, 255]. */
#define
Py_CHARMASK
(
c
) ((unsigned char)((c) & 0xff))
/* Assert a build-time dependency, as an expression.
Your compile will fail if the condition isn't true, or can't be evaluated
by the compiler. This can be used in an expression: its value is 0.
Example:
#define foo_to_char(foo) \
((char *)(foo) \
+ Py_BUILD_ASSERT_EXPR(offsetof(struct foo, string) == 0))
Written by Rusty Russell, public domain, http://ccodearchive.net/ */
#define
Py_BUILD_ASSERT_EXPR
(
cond
) \
(sizeof(char [1 - 2*!(cond)]) - 1)
#define
Py_BUILD_ASSERT
(
cond
) do { \
(void)Py_BUILD_ASSERT_EXPR(cond); \
} while(0)
/* Get the number of elements in a visible array
This does not work on pointers, or arrays declared as [], or function
parameters. With correct compiler support, such usage will cause a build
error (see Py_BUILD_ASSERT_EXPR).
Written by Rusty Russell, public domain, http://ccodearchive.net/
Requires at GCC 3.1+ */
#if
(defined(
__GNUC__
)
&&
!defined(
__STRICT_ANSI__
)
&&
\
(((
__GNUC__
==
3
)
&&
(
__GNU_MINOR__
>=
1
))
||
(
__GNUC__
>=
4
)))
/* Two gcc extensions.
&a[0] degrades to a pointer: a different type from an array */
#define
Py_ARRAY_LENGTH
(
array
) \
(sizeof(array) / sizeof((array)[0]) \
+ Py_BUILD_ASSERT_EXPR(!__builtin_types_compatible_p(typeof(array), \
typeof(&(array)[0]))))
#else
#define
Py_ARRAY_LENGTH
(
array
) \
(sizeof(array) / sizeof((array)[0]))
#endif
/* Define macros for inline documentation. */
#define
PyDoc_VAR
(
name
) static char name[]
#define
PyDoc_STRVAR
(
name
,
str
) PyDoc_VAR(name) = PyDoc_STR(str)
#ifdef
WITH_DOC_STRINGS
#define
PyDoc_STR
(
str
) str
#else
#define
PyDoc_STR
(
str
) ""
#endif
/* Below "a" is a power of 2. */
/* Round down size "n" to be a multiple of "a". */
#define
_Py_SIZE_ROUND_DOWN
(
n
,
a
) ((size_t)(n) & ~(size_t)((a) - 1))
/* Round up size "n" to be a multiple of "a". */
#define
_Py_SIZE_ROUND_UP
(
n
,
a
) (((size_t)(n) + \
(size_t)((a) - 1)) & ~(size_t)((a) - 1))
/* Round pointer "p" down to the closest "a"-aligned address <= "p". */
#define
_Py_ALIGN_DOWN
(
p
,
a
) ((void *)((uintptr_t)(p) & ~(uintptr_t)((a) - 1)))
/* Round pointer "p" up to the closest "a"-aligned address >= "p". */
#define
_Py_ALIGN_UP
(
p
,
a
) ((void *)(((uintptr_t)(p) + \
(uintptr_t)((a) - 1)) & ~(uintptr_t)((a) - 1)))
/* Check if pointer "p" is aligned to "a"-bytes boundary. */
#define
_Py_IS_ALIGNED
(
p
,
a
) (!((uintptr_t)(p) & (uintptr_t)((a) - 1)))
#ifdef
__GNUC__
#define
Py_UNUSED
(
name
) _unused_ ## name __attribute__((unused))
#else
#define
Py_UNUSED
(
name
) _unused_ ## name
#endif
#endif
/* Py_PYMACRO_H */
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