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const std::string | name () const override |
| Name of the reducer algorithm: "argmax" .
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util::dtype | preferred_dtype () const override |
| Data type to prefer, as a NumPy dtype, if the array has UnknownType.
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util::dtype | return_dtype (util::dtype given_dtype) const override |
| Return type for a given_dtype as a NumPy dtype.
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virtual bool | returns_positions () const override |
| True if this reducer returns index positions; false otherwise.
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const std::shared_ptr< void > | apply_bool (const bool *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of boolean values.
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const std::shared_ptr< void > | apply_int8 (const int8_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of signed 8-bit integer values.
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const std::shared_ptr< void > | apply_uint8 (const uint8_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of unsigned 8-bit integer values.
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const std::shared_ptr< void > | apply_int16 (const int16_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of signed 16-bit integer values.
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const std::shared_ptr< void > | apply_uint16 (const uint16_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of unsigned 16-bit integer values.
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const std::shared_ptr< void > | apply_int32 (const int32_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of signed 32-bit integer values.
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const std::shared_ptr< void > | apply_uint32 (const uint32_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of unsigned 32-bit integer values.
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const std::shared_ptr< void > | apply_int64 (const int64_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of signed 64-bit integer values.
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const std::shared_ptr< void > | apply_uint64 (const uint64_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of unsigned 64-bit integer values.
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const std::shared_ptr< void > | apply_float32 (const float *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of 32-bit floating-point values.
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const std::shared_ptr< void > | apply_float64 (const double *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of 64-bit floating-point values.
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const std::shared_ptr< void > | apply_complex64 (const std::complex< float > *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of complex 32-bit floating-point values.
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const std::shared_ptr< void > | apply_complex128 (const std::complex< double > *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of complex 64-bit floating-point values.
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const std::shared_ptr< void > | apply_datetime (const int64_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of datetime values.
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const std::shared_ptr< void > | apply_timedelta (const int64_t *data, const Index64 &parents, int64_t outlength) const override |
| Apply the reducer algorithm to an array of timedelta values.
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virtual const std::string | name () const =0 |
| Name of the reducer algorithm.
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virtual util::dtype | preferred_dtype () const =0 |
| Data type to prefer, as a NumPy dtype, if the array has UnknownType.
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virtual util::dtype | return_dtype (util::dtype given_dtype) const |
| Return type for a given_dtype as a NumPy dtype.
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virtual bool | returns_positions () const |
| True if this reducer returns index positions; false otherwise.
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virtual const std::shared_ptr< void > | apply_bool (const bool *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of boolean values.
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virtual const std::shared_ptr< void > | apply_int8 (const int8_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of signed 8-bit integer values.
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virtual const std::shared_ptr< void > | apply_uint8 (const uint8_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of unsigned 8-bit integer values.
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virtual const std::shared_ptr< void > | apply_int16 (const int16_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of signed 16-bit integer values.
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virtual const std::shared_ptr< void > | apply_uint16 (const uint16_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of unsigned 16-bit integer values.
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virtual const std::shared_ptr< void > | apply_int32 (const int32_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of signed 32-bit integer values.
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virtual const std::shared_ptr< void > | apply_uint32 (const uint32_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of unsigned 32-bit integer values.
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virtual const std::shared_ptr< void > | apply_int64 (const int64_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of signed 64-bit integer values.
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virtual const std::shared_ptr< void > | apply_uint64 (const uint64_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of unsigned 64-bit integer values.
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virtual const std::shared_ptr< void > | apply_float32 (const float *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of 32-bit floating-point values.
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virtual const std::shared_ptr< void > | apply_float64 (const double *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of 64-bit floating-point values.
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virtual const std::shared_ptr< void > | apply_complex64 (const std::complex< float > *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of complex 32-bit floating-point values.
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virtual const std::shared_ptr< void > | apply_complex128 (const std::complex< double > *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of complex 64-bit floating-point values.
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virtual const std::shared_ptr< void > | apply_datetime (const int64_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of datetime values.
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virtual const std::shared_ptr< void > | apply_timedelta (const int64_t *data, const Index64 &parents, int64_t outlength) const =0 |
| Apply the reducer algorithm to an array of timedelta values.
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Reducer algorithm that returns the position of the maximum value. The identity is meaningless and should be covered using mask = true
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Reducers have no parameters or state. They are classes for convenience, to separate Content::reduce_next
, determining which values to combine, from the choice of reducer algorithm.
For the complex numbers array it returns the position of the maximum absolute value (also known as norm, modulus, or magnitude) of a complex number.