mirror of https://github.com/python/cpython
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
#ifndef Py_INTERNAL_DTOA_H
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#define Py_INTERNAL_DTOA_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef Py_BUILD_CORE
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# error "this header requires Py_BUILD_CORE define"
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#endif
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#include "pycore_pymath.h" // _PY_SHORT_FLOAT_REPR
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#if _PY_SHORT_FLOAT_REPR == 1
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typedef uint32_t ULong;
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struct
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Bigint {
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struct Bigint *next;
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int k, maxwds, sign, wds;
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ULong x[1];
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};
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#ifdef Py_USING_MEMORY_DEBUGGER
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struct _dtoa_state {
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int _not_used;
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};
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#define _dtoa_interp_state_INIT(INTERP) \
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{0}
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#else // !Py_USING_MEMORY_DEBUGGER
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/* The size of the Bigint freelist */
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#define Bigint_Kmax 7
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#ifndef PRIVATE_MEM
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#define PRIVATE_MEM 2304
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#endif
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#define Bigint_PREALLOC_SIZE \
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((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))
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struct _dtoa_state {
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/* p5s is a linked list of powers of 5 of the form 5**(2**i), i >= 2 */
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// XXX This should be freed during runtime fini.
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struct Bigint *p5s;
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struct Bigint *freelist[Bigint_Kmax+1];
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double preallocated[Bigint_PREALLOC_SIZE];
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double *preallocated_next;
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};
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#define _dtoa_state_INIT(INTERP) \
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{ \
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.preallocated_next = (INTERP)->dtoa.preallocated, \
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}
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#endif // !Py_USING_MEMORY_DEBUGGER
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/* These functions are used by modules compiled as C extension like math:
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they must be exported. */
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PyAPI_FUNC(double) _Py_dg_strtod(const char *str, char **ptr);
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PyAPI_FUNC(char *) _Py_dg_dtoa(double d, int mode, int ndigits,
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int *decpt, int *sign, char **rve);
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PyAPI_FUNC(void) _Py_dg_freedtoa(char *s);
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PyAPI_FUNC(double) _Py_dg_stdnan(int sign);
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PyAPI_FUNC(double) _Py_dg_infinity(int sign);
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#endif // _PY_SHORT_FLOAT_REPR == 1
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_INTERNAL_DTOA_H */
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