cimport numpy as cnp
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from cpython.datetime cimport (
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date,
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datetime,
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)
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from numpy cimport (
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int32_t,
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int64_t,
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)
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# TODO(cython3): most of these can be cimported directly from numpy
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cdef extern from "numpy/ndarrayobject.h":
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ctypedef int64_t npy_timedelta
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ctypedef int64_t npy_datetime
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cdef extern from "numpy/ndarraytypes.h":
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ctypedef struct PyArray_DatetimeMetaData:
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NPY_DATETIMEUNIT base
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int64_t num
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cdef extern from "numpy/arrayscalars.h":
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ctypedef struct PyDatetimeScalarObject:
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# PyObject_HEAD
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npy_datetime obval
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PyArray_DatetimeMetaData obmeta
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ctypedef struct PyTimedeltaScalarObject:
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# PyObject_HEAD
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npy_timedelta obval
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PyArray_DatetimeMetaData obmeta
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cdef extern from "numpy/ndarraytypes.h":
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ctypedef struct npy_datetimestruct:
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int64_t year
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int32_t month, day, hour, min, sec, us, ps, as
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ctypedef enum NPY_DATETIMEUNIT:
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NPY_FR_Y
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NPY_FR_M
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NPY_FR_W
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NPY_FR_D
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NPY_FR_B
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NPY_FR_h
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NPY_FR_m
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NPY_FR_s
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NPY_FR_ms
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NPY_FR_us
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NPY_FR_ns
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NPY_FR_ps
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NPY_FR_fs
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NPY_FR_as
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NPY_FR_GENERIC
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int64_t NPY_DATETIME_NAT # elswhere we call this NPY_NAT
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cdef extern from "src/datetime/np_datetime.h":
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ctypedef struct pandas_timedeltastruct:
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int64_t days
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int32_t hrs, min, sec, ms, us, ns, seconds, microseconds, nanoseconds
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void pandas_datetime_to_datetimestruct(npy_datetime val,
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NPY_DATETIMEUNIT fr,
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npy_datetimestruct *result) nogil
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npy_datetime npy_datetimestruct_to_datetime(NPY_DATETIMEUNIT fr,
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npy_datetimestruct *d) nogil
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void pandas_timedelta_to_timedeltastruct(npy_timedelta val,
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NPY_DATETIMEUNIT fr,
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pandas_timedeltastruct *result
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) nogil
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cdef bint cmp_scalar(int64_t lhs, int64_t rhs, int op) except -1
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cdef check_dts_bounds(npy_datetimestruct *dts, NPY_DATETIMEUNIT unit=?)
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cdef int64_t pydatetime_to_dt64(
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datetime val, npy_datetimestruct *dts, NPY_DATETIMEUNIT reso=?
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)
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cdef void pydatetime_to_dtstruct(datetime dt, npy_datetimestruct *dts)
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cdef int64_t pydate_to_dt64(
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date val, npy_datetimestruct *dts, NPY_DATETIMEUNIT reso=?
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)
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cdef void pydate_to_dtstruct(date val, npy_datetimestruct *dts)
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cdef npy_datetime get_datetime64_value(object obj) nogil
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cdef npy_timedelta get_timedelta64_value(object obj) nogil
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cdef NPY_DATETIMEUNIT get_datetime64_unit(object obj) nogil
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cdef int string_to_dts(
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str val,
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npy_datetimestruct* dts,
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NPY_DATETIMEUNIT* out_bestunit,
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int* out_local,
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int* out_tzoffset,
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bint want_exc,
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format: str | None = *,
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bint exact = *
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) except? -1
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cdef NPY_DATETIMEUNIT get_unit_from_dtype(cnp.dtype dtype)
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cpdef cnp.ndarray astype_overflowsafe(
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cnp.ndarray values, # ndarray[datetime64[anyunit]]
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cnp.dtype dtype, # ndarray[datetime64[anyunit]]
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bint copy=*,
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bint round_ok=*,
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bint is_coerce=*,
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)
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cdef int64_t get_conversion_factor(
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NPY_DATETIMEUNIT from_unit,
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NPY_DATETIMEUNIT to_unit,
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) except? -1
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cdef bint cmp_dtstructs(npy_datetimestruct* left, npy_datetimestruct* right, int op)
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cdef get_implementation_bounds(
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NPY_DATETIMEUNIT reso, npy_datetimestruct *lower, npy_datetimestruct *upper
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)
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cdef int64_t convert_reso(
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int64_t value,
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NPY_DATETIMEUNIT from_reso,
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NPY_DATETIMEUNIT to_reso,
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bint round_ok,
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) except? -1
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cdef extern from "src/datetime/np_datetime_strings.h":
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ctypedef enum FormatRequirement:
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PARTIAL_MATCH
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EXACT_MATCH
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INFER_FORMAT
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