cpython/Include/internal/pycore_dtoa.h

80 lines
1.7 KiB
C

#ifndef Py_INTERNAL_DTOA_H
#define Py_INTERNAL_DTOA_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_pymath.h" // _PY_SHORT_FLOAT_REPR
#if _PY_SHORT_FLOAT_REPR == 1
typedef uint32_t ULong;
struct
Bigint {
struct Bigint *next;
int k, maxwds, sign, wds;
ULong x[1];
};
#ifdef Py_USING_MEMORY_DEBUGGER
struct _dtoa_state {
int _not_used;
};
#define _dtoa_interp_state_INIT(INTERP) \
{0}
#else // !Py_USING_MEMORY_DEBUGGER
/* The size of the Bigint freelist */
#define Bigint_Kmax 7
/* The size of the cached powers of 5 array */
#define Bigint_Pow5size 8
#ifndef PRIVATE_MEM
#define PRIVATE_MEM 2304
#endif
#define Bigint_PREALLOC_SIZE \
((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))
struct _dtoa_state {
// p5s is an array of powers of 5 of the form:
// 5**(2**(i+2)) for 0 <= i < Bigint_Pow5size
struct Bigint *p5s[Bigint_Pow5size];
// XXX This should be freed during runtime fini.
struct Bigint *freelist[Bigint_Kmax+1];
double preallocated[Bigint_PREALLOC_SIZE];
double *preallocated_next;
};
#define _dtoa_state_INIT(INTERP) \
{ \
.preallocated_next = (INTERP)->dtoa.preallocated, \
}
#endif // !Py_USING_MEMORY_DEBUGGER
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);
#endif // _PY_SHORT_FLOAT_REPR == 1
extern PyStatus _PyDtoa_Init(PyInterpreterState *interp);
extern void _PyDtoa_Fini(PyInterpreterState *interp);
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_DTOA_H */