o <ºiÐã@sàdZddlZddlmZdedefdd„Zded edefd d„ZdeeBdefdd „ZddededBdefdd„Z ded edefdd„Z dededefdd„Zedd„e dƒDƒƒZedd„e dƒDƒƒZdedefdd„ZdS)z0Helper methods for working with Python Decimals.éN)ÚDecimalÚvalueÚreturncCs$| ¡\}}}tt||dfƒ ¡ƒS)z˜Get an unscaled value given a Decimal value. Args: value (Decimal): A Decimal instance. Returns: int: The unscaled value. r)Úas_tupleÚintrÚto_integral_value)rÚsignÚdigitsÚ_©rúT/home/ubuntu/veenaModal/venv/lib/python3.10/site-packages/pyiceberg/utils/decimal.pyÚdecimal_to_unscaleds r ÚunscaledÚscalecCs"t|ƒ ¡\}}}t|||fƒS)zûGet a scaled Decimal value given an unscaled value and a scale. Args: unscaled (int): An unscaled value. scale (int): A scale to set for the returned Decimal instance. Returns: Decimal: A scaled Decimal instance. )rr)rrrr r rrrÚunscaled_to_decimal%s rcCsFt|tƒr | ¡ddSt|tƒrt|ƒ ¡ddStd|›ƒ‚)zÿReturn the minimum number of bytes needed to serialize a decimal or unscaled value. Args: value (int | Decimal): a Decimal value or unscaled int value. Returns: int: the minimum number of bytes needed to serialize the value. ézUnsupported value: )Ú isinstancerÚ bit_lengthrr Ú ValueError)rrrrÚbytes_required3s rÚbyte_lengthcCs(t|ƒ}|durt|ƒ}|j|dddS)zÜReturn a byte representation of a decimal. Args: value (Decimal): a decimal value. byte_length (int): The number of bytes. Returns: bytes: the unscaled value of the Decimal as bytes. NÚbigT©Ú byteorderÚsigned)r rÚto_bytes)rrÚunscaled_valuerrrÚdecimal_to_bytesDs rcCstj|ddd}t||ƒS)zÓReturn a decimal from the bytes. Args: value (bytes): the bytes to be converted into a decimal. scale (int): the scale of the decimal. Returns: Decimal: the scaled decimal. rTr)rÚ from_bytesr)rrÚunscaled_datumrrrÚbytes_to_decimalSs r ÚwidthcCs4t|ƒ}|||||}t|tt| ¡jƒƒƒS)zöGet a truncated Decimal value given a decimal value and a width. Args: value (Decimal): a decimal value. width (int): A width for the returned Decimal instance. Returns: Decimal: A truncated Decimal instance. )r rÚabsrrÚexponent)rr!rÚ applied_valuerrrÚtruncate_decimalas r%ccs:|]}t t t t dd|d¡d¡¡¡VqdS)éréN)ÚmathÚfloorÚlog10ÚfabsÚpow©Ú.0ÚposrrrÚ os€8r0éc#s*|]‰t‡fdd„tdƒDƒƒVqdS)c3s |]}ˆt|kr|VqdS©N)Ú MAX_PRECISIONr-©Úprrr0ps€z.r1N)ÚnextÚrange)r.rr4rr0ps€(é(Ú precisioncCs&|dks|dkrtd|›ƒ‚t|S)zÜCompute the number of bytes required to store a precision. Args: precision: The number of digits to store. Returns: The number of bytes required to store a decimal with a certain precision. rr8z+Unsupported precision, outside of (0, 40]: )rÚREQUIRED_LENGTH)r9rrrÚdecimal_required_bytesss r;r2)Ú__doc__r(Údecimalrrr rrÚbytesrr r%Útupler7r3r:r;rrrrÚs