Float field



In [1]:

    
from konfoo import Index, Byteorder, Float

Item

Item type of the field class.



In [2]:

    
Float.item_type









    Out[2]:





ItemClass.Float = 30

Checks if the field class is a bit field.



In [3]:

    
Float.is_bit()









    Out[3]:





False

Checks if the field class is a boolean field.



In [4]:

    
Float.is_bool()









    Out[4]:





False

Checks if the field class is a decimal number field.



In [5]:

    
Float.is_decimal()









    Out[5]:





False

Checks if the field class is a floating point number field.



In [6]:

    
Float.is_float()









    Out[6]:





True

Checks if the field class is a pointer field.



In [7]:

    
Float.is_pointer()









    Out[7]:





False

Checks if the field class is a stream field.



In [8]:

    
Float.is_stream()









    Out[8]:





False

Checks if the field class is a string field.



In [9]:

    
Float.is_string()









    Out[9]:





False

Field



In [10]:

    
real = Float(byte_order='auto')



In [11]:

    
real = Float()

Field view



In [12]:

    
real









    Out[12]:





Float(index=Index(byte=0, bit=0, address=0, base_address=0, update=False), alignment=Alignment(byte_size=4, bit_offset=0), bit_size=32, value=0.0)



In [13]:

    
str(real)









    Out[13]:





'Float32(Index(byte=0, bit=0, address=0, base_address=0, update=False), Alignment(byte_size=4, bit_offset=0), 32, 0.0)'



In [14]:

    
repr(real)









    Out[14]:





'Float(index=Index(byte=0, bit=0, address=0, base_address=0, update=False), alignment=Alignment(byte_size=4, bit_offset=0), bit_size=32, value=0.0)'

Field name



In [15]:

    
real.name









    Out[15]:





'Float32'

Field index



In [16]:

    
real.index









    Out[16]:





Index(byte=0, bit=0, address=0, base_address=0, update=False)

Byte index of the field within the byte stream.



In [17]:

    
real.index.byte









    Out[17]:





0

Bit offset relative to the byte index of the field within the byte stream.



In [18]:

    
real.index.bit









    Out[18]:





0

Absolute address of the field within the data source.



In [19]:

    
real.index.address









    Out[19]:





0

Base address of the byte stream within the data source.



In [20]:

    
real.index.base_address









    Out[20]:





0

Indexes the field and returns the index after the field.



In [21]:

    
real.index_field(index=Index())









    Out[21]:





Index(byte=4, bit=0, address=4, base_address=0, update=False)

Field alignment



In [22]:

    
real.alignment









    Out[22]:





Alignment(byte_size=4, bit_offset=0)

Byte size of the field group which the field is aligned to.



In [23]:

    
real.alignment.byte_size









    Out[23]:





4

Bit offset of the field within its aligned field group.



In [24]:

    
real.alignment.bit_offset









    Out[24]:





0

Field size



In [25]:

    
real.bit_size









    Out[25]:





32

Field byte order



In [26]:

    
real.byte_order









    Out[26]:





Byteorder.auto = 'auto'



In [27]:

    
real.byte_order.value









    Out[27]:





'auto'



In [28]:

    
real.byte_order.name









    Out[28]:





'auto'



In [29]:

    
real.byte_order = 'auto'



In [30]:

    
real.byte_order = Byteorder.auto

Field value

Maximal float field value.



In [31]:

    
real.max()









    Out[31]:





3.4028234663852886e+38

Minimal float field value.



In [32]:

    
real.min()









    Out[32]:





-3.4028234663852886e+38

Smallest float field value.



In [33]:

    
real.smallest()









    Out[33]:





1.1754943508222875e-38

Epsilon float field value.



In [34]:

    
real.epsilon()









    Out[34]:





5.960464477539063e-08

Returns the float field value as a single precision floating point number.



In [35]:

    
real.value









    Out[35]:





0.0

Returns the float field value aligned to its field group as a number of bytes.



In [36]:

    
bytes(real)









    Out[36]:





b'\x00\x00\x00\x00'



In [37]:

    
bytes(real).hex()









    Out[37]:





'00000000'

Returns the float field value as an integer number.



In [38]:

    
int(real)









    Out[38]:





0

Returns the float field value as a single precision floating point number.



In [39]:

    
float(real)









    Out[39]:





0.0

Returns the float field value as a boolean value.



In [40]:

    
bool(real)









    Out[40]:





False

Field metadata

Returns the meatadata of the field as an ordered dictionary.



In [41]:

    
real.describe()









    Out[41]:





OrderedDict([('address', 0),
             ('alignment', [4, 0]),
             ('class', 'Float32'),
             ('index', [0, 0]),
             ('max', 3.4028234663852886e+38),
             ('min', -3.4028234663852886e+38),
             ('name', 'Float32'),
             ('order', 'auto'),
             ('size', 32),
             ('type', 'Field'),
             ('value', 0.0)])

Deserialize



In [42]:

    
real.deserialize(bytes.fromhex('0000803f'), byte_order='little')









    Out[42]:





Index(byte=4, bit=0, address=4, base_address=0, update=False)



In [43]:

    
real.value









    Out[43]:





1.0



In [44]:

    
bytes(real)









    Out[44]:





b'\x00\x00\x80?'



In [45]:

    
bytes(real).hex()









    Out[45]:





'0000803f'



In [46]:

    
int(real)









    Out[46]:





1



In [47]:

    
float(real)









    Out[47]:





1.0



In [48]:

    
bool(real)









    Out[48]:





True

Serialize



In [49]:

    
buffer = bytearray()



In [50]:

    
real.value = 1



In [51]:

    
real.value = 1.0



In [52]:

    
real.value = 0x1



In [53]:

    
real.value = 0b1



In [54]:

    
real.value = 0o1



In [55]:

    
real.value = True



In [56]:

    
real.value = 1.0



In [57]:

    
real.serialize(buffer, byte_order='little')









    Out[57]:





Index(byte=4, bit=0, address=4, base_address=0, update=False)



In [58]:

    
buffer.hex()









    Out[58]:





'0000803f'



In [59]:

    
bytes(real).hex()









    Out[59]:





'0000803f'



In [ ]: