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cpython/Include/internal/pycore_dtoa.h

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gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) This is the first of several changes to consolidate non-object globals in core code. https://github.com/python/cpython/issues/81057
2022-11-15 09:45:11 -07:00
#ifndef Py_INTERNAL_DTOA_H
#define Py_INTERNAL_DTOA_H
Issue #1580: use short float repr where possible. - incorporate and adapt David Gay's dtoa and strtod into the Python core - on platforms where we can use Gay's code (almost all!), repr(float) is based on the shortest sequence of decimal digits that rounds correctly. - add sys.float_repr_style attribute to indicate whether we're using Gay's code or not - add autoconf magic to detect and enable SSE2 instructions on x86/gcc - slight change to repr and str: repr switches to exponential notation at 1e16 instead of 1e17, str switches at 1e11 instead of 1e12
2009-04-16 19:52:09 +00:00
#ifdef __cplusplus
extern "C" {
#endif
bpo-35081: Move dtoa.h header to the internal C API (GH-18489) Move the dtoa.h header file to the internal C API as pycore_dtoa.h: it only contains private functions (prefixed by "_Py"). The math and cmath modules must now be compiled with the Py_BUILD_CORE macro defined.
2020-02-12 22:54:42 +01:00
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
bpo-45412: Add _PY_SHORT_FLOAT_REPR macro (GH-31171) Remove the HAVE_PY_SET_53BIT_PRECISION macro (moved to the internal C API). * Move HAVE_PY_SET_53BIT_PRECISION macro to pycore_pymath.h. * Replace PY_NO_SHORT_FLOAT_REPR macro with _PY_SHORT_FLOAT_REPR macro which is always defined. gcc -Wundef emits a warning when using _PY_SHORT_FLOAT_REPR but the macro is not defined, if pycore_pymath.h include was forgotten.
2022-02-23 18:16:23 +01:00
#include "pycore_pymath.h" // _PY_SHORT_FLOAT_REPR
gh-119447: Fix build with _PY_SHORT_FLOAT_REPR == 0 (#121178)
2024-06-30 11:40:40 +02:00
#if defined(Py_USING_MEMORY_DEBUGGER) || _PY_SHORT_FLOAT_REPR == 0
gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) This is the first of several changes to consolidate non-object globals in core code. https://github.com/python/cpython/issues/81057
2022-11-15 09:45:11 -07:00
gh-119447: Fix build with _PY_SHORT_FLOAT_REPR == 0 (#121178)
2024-06-30 11:40:40 +02:00
#define _dtoa_state_INIT(INTERP) \
gh-100227: Move the dtoa State to PyInterpreterState (gh-102331) https://github.com/python/cpython/issues/100227
2023-02-28 13:14:40 -07:00
{0}
gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) This is the first of several changes to consolidate non-object globals in core code. https://github.com/python/cpython/issues/81057
2022-11-15 09:45:11 -07:00
GH-131238: Core header refactor (GH-131250) * Moves most structs in pycore_ header files into pycore_structs.h and pycore_runtime_structs.h * Removes many cross-header dependencies
2025-03-17 09:19:04 +00:00
#else
gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) This is the first of several changes to consolidate non-object globals in core code. https://github.com/python/cpython/issues/81057
2022-11-15 09:45:11 -07:00
gh-100227: Move the dtoa State to PyInterpreterState (gh-102331) https://github.com/python/cpython/issues/100227
2023-02-28 13:14:40 -07:00
#define _dtoa_state_INIT(INTERP) \
gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) This is the first of several changes to consolidate non-object globals in core code. https://github.com/python/cpython/issues/81057
2022-11-15 09:45:11 -07:00
{ \
gh-100227: Move the dtoa State to PyInterpreterState (gh-102331) https://github.com/python/cpython/issues/100227
2023-02-28 13:14:40 -07:00
.preallocated_next = (INTERP)->dtoa.preallocated, \
gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) This is the first of several changes to consolidate non-object globals in core code. https://github.com/python/cpython/issues/81057
2022-11-15 09:45:11 -07:00
}
GH-131238: Core header refactor (GH-131250) * Moves most structs in pycore_ header files into pycore_structs.h and pycore_runtime_structs.h * Removes many cross-header dependencies
2025-03-17 09:19:04 +00:00
#endif
gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) This is the first of several changes to consolidate non-object globals in core code. https://github.com/python/cpython/issues/81057
2022-11-15 09:45:11 -07:00
gh-107211: No longer export internal functions (1) (#107213) No longer export these 49 internal C API functions: * _PyArgv_AsWstrList() * _PyCode_New() * _PyCode_Validate() * _PyFloat_DebugMallocStats() * _PyFloat_FormatAdvancedWriter() * _PyImport_CheckSubinterpIncompatibleExtensionAllowed() * _PyImport_ClearExtension() * _PyImport_GetModuleId() * _PyImport_SetModuleString() * _PyInterpreterState_IDDecref() * _PyInterpreterState_IDIncref() * _PyInterpreterState_IDInitref() * _PyInterpreterState_LookUpID() * _PyWideStringList_AsList() * _PyWideStringList_CheckConsistency() * _PyWideStringList_Clear() * _PyWideStringList_Copy() * _PyWideStringList_Extend() * _Py_ClearArgcArgv() * _Py_DecodeUTF8Ex() * _Py_DecodeUTF8_surrogateescape() * _Py_EncodeLocaleRaw() * _Py_EncodeUTF8Ex() * _Py_GetEnv() * _Py_GetForceASCII() * _Py_GetLocaleEncoding() * _Py_GetLocaleEncodingObject() * _Py_GetLocaleconvNumeric() * _Py_ResetForceASCII() * _Py_device_encoding() * _Py_dg_dtoa() * _Py_dg_freedtoa() * _Py_dg_strtod() * _Py_get_blocking() * _Py_get_env_flag() * _Py_get_inheritable() * _Py_get_osfhandle_noraise() * _Py_get_xoption() * _Py_open() * _Py_open_osfhandle() * _Py_open_osfhandle_noraise() * _Py_read() * _Py_set_blocking() * _Py_str_to_int() * _Py_wfopen() * _Py_wgetcwd() * _Py_wreadlink() * _Py_wrealpath() * _Py_write()
2023-07-25 03:44:11 +02:00
extern double _Py_dg_strtod(const char *str, char **ptr);
extern char* _Py_dg_dtoa(double d, int mode, int ndigits,
int *decpt, int *sign, char **rve);
extern void _Py_dg_freedtoa(char *s);
Issue #1580: use short float repr where possible. - incorporate and adapt David Gay's dtoa and strtod into the Python core - on platforms where we can use Gay's code (almost all!), repr(float) is based on the shortest sequence of decimal digits that rounds correctly. - add sys.float_repr_style attribute to indicate whether we're using Gay's code or not - add autoconf magic to detect and enable SSE2 instructions on x86/gcc - slight change to repr and str: repr switches to exponential notation at 1e16 instead of 1e17, str switches at 1e11 instead of 1e12
2009-04-16 19:52:09 +00:00
gh-111962: Make dtoa thread-safe in `--disable-gil` builds. (#112049) This updates `dtoa.c` to avoid using the Bigint free-list in --disable-gil builds and to pre-computes the needed powers of 5 during interpreter initialization. * gh-111962: Make dtoa thread-safe in `--disable-gil` builds. This avoids using the Bigint free-list in `--disable-gil` builds and pre-computes the needed powers of 5 during interpreter initialization. * Fix size of cached powers of 5 array. We need the powers of 5 up to 5**512 because we only jump straight to underflow when the exponent is less than -512 (or larger than 308). * Rename Py_NOGIL to Py_GIL_DISABLED * Changes from review * Fix assertion placement
2023-12-07 08:47:55 -05:00
extern PyStatus _PyDtoa_Init(PyInterpreterState *interp);
extern void _PyDtoa_Fini(PyInterpreterState *interp);
Issue #1580: use short float repr where possible. - incorporate and adapt David Gay's dtoa and strtod into the Python core - on platforms where we can use Gay's code (almost all!), repr(float) is based on the shortest sequence of decimal digits that rounds correctly. - add sys.float_repr_style attribute to indicate whether we're using Gay's code or not - add autoconf magic to detect and enable SSE2 instructions on x86/gcc - slight change to repr and str: repr switches to exponential notation at 1e16 instead of 1e17, str switches at 1e11 instead of 1e12
2009-04-16 19:52:09 +00:00
#ifdef __cplusplus
}
#endif
gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) This is the first of several changes to consolidate non-object globals in core code. https://github.com/python/cpython/issues/81057
2022-11-15 09:45:11 -07:00
#endif /* !Py_INTERNAL_DTOA_H */
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