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|
"""
Lifted from Precision.py. This is for compatibility only.
The character strings are still for "new" NumPy
which is the only Incompatibility with Numeric
"""
from __future__ import division, absolute_import, print_function
__all__ = ['Character', 'Complex', 'Float',
'PrecisionError', 'PyObject', 'Int', 'UInt',
'UnsignedInt', 'UnsignedInteger', 'string', 'typecodes', 'zeros']
from .functions import zeros
import string # for backwards compatibility
typecodes = {'Character':'c', 'Integer':'bhil', 'UnsignedInteger':'BHIL', 'Float':'fd', 'Complex':'FD'}
def _get_precisions(typecodes):
lst = []
for t in typecodes:
lst.append( (zeros( (1,), t ).itemsize*8, t) )
return lst
def _fill_table(typecodes, table={}):
for key, value in typecodes.items():
table[key] = _get_precisions(value)
return table
_code_table = _fill_table(typecodes)
class PrecisionError(Exception):
pass
def _lookup(table, key, required_bits):
lst = table[key]
for bits, typecode in lst:
if bits >= required_bits:
return typecode
raise PrecisionError(key + " of " + str(required_bits) +
" bits not available on this system")
Character = 'c'
try:
UnsignedInt8 = _lookup(_code_table, "UnsignedInteger", 8)
UInt8 = UnsignedInt8
__all__.extend(['UnsignedInt8', 'UInt8'])
except(PrecisionError):
pass
try:
UnsignedInt16 = _lookup(_code_table, "UnsignedInteger", 16)
UInt16 = UnsignedInt16
__all__.extend(['UnsignedInt16', 'UInt16'])
except(PrecisionError):
pass
try:
UnsignedInt32 = _lookup(_code_table, "UnsignedInteger", 32)
UInt32 = UnsignedInt32
__all__.extend(['UnsignedInt32', 'UInt32'])
except(PrecisionError):
pass
try:
UnsignedInt64 = _lookup(_code_table, "UnsignedInteger", 64)
UInt64 = UnsignedInt64
__all__.extend(['UnsignedInt64', 'UInt64'])
except(PrecisionError):
pass
try:
UnsignedInt128 = _lookup(_code_table, "UnsignedInteger", 128)
UInt128 = UnsignedInt128
__all__.extend(['UnsignedInt128', 'UInt128'])
except(PrecisionError):
pass
UInt = UnsignedInt = UnsignedInteger = 'u'
try:
Int0 = _lookup(_code_table, 'Integer', 0)
__all__.append('Int0')
except(PrecisionError):
pass
try:
Int8 = _lookup(_code_table, 'Integer', 8)
__all__.append('Int8')
except(PrecisionError):
pass
try:
Int16 = _lookup(_code_table, 'Integer', 16)
__all__.append('Int16')
except(PrecisionError):
pass
try:
Int32 = _lookup(_code_table, 'Integer', 32)
__all__.append('Int32')
except(PrecisionError):
pass
try:
Int64 = _lookup(_code_table, 'Integer', 64)
__all__.append('Int64')
except(PrecisionError):
pass
try:
Int128 = _lookup(_code_table, 'Integer', 128)
__all__.append('Int128')
except(PrecisionError):
pass
Int = 'l'
try:
Float0 = _lookup(_code_table, 'Float', 0)
__all__.append('Float0')
except(PrecisionError):
pass
try:
Float8 = _lookup(_code_table, 'Float', 8)
__all__.append('Float8')
except(PrecisionError):
pass
try:
Float16 = _lookup(_code_table, 'Float', 16)
__all__.append('Float16')
except(PrecisionError):
pass
try:
Float32 = _lookup(_code_table, 'Float', 32)
__all__.append('Float32')
except(PrecisionError):
pass
try:
Float64 = _lookup(_code_table, 'Float', 64)
__all__.append('Float64')
except(PrecisionError):
pass
try:
Float128 = _lookup(_code_table, 'Float', 128)
__all__.append('Float128')
except(PrecisionError):
pass
Float = 'd'
try:
Complex0 = _lookup(_code_table, 'Complex', 0)
__all__.append('Complex0')
except(PrecisionError):
pass
try:
Complex8 = _lookup(_code_table, 'Complex', 16)
__all__.append('Complex8')
except(PrecisionError):
pass
try:
Complex16 = _lookup(_code_table, 'Complex', 32)
__all__.append('Complex16')
except(PrecisionError):
pass
try:
Complex32 = _lookup(_code_table, 'Complex', 64)
__all__.append('Complex32')
except(PrecisionError):
pass
try:
Complex64 = _lookup(_code_table, 'Complex', 128)
__all__.append('Complex64')
except(PrecisionError):
pass
try:
Complex128 = _lookup(_code_table, 'Complex', 256)
__all__.append('Complex128')
except(PrecisionError):
pass
Complex = 'D'
PyObject = 'O'
|
