1"""
2"""
3from __future__ import absolute_import
4
5from ..unitquantity import UnitQuantity
6from .length import m, rod
7
8are = ares = UnitQuantity(
9    'are',
10    100*m**2,
11    aliases=['ares']
12)
13b = barn = UnitQuantity(
14    'barn',
15    1e-28*m**2,
16    symbol='b',
17    aliases=['barnes']
18)
19cmil = circular_mil = UnitQuantity(
20    'circular_mil',
21    5.067075e-10*m**2,
22    symbol='cmil',
23    aliases=['circular_mils'],
24    doc='conversions approximate, area of a circle with diameter=1 mil'
25)
26D = darcy = UnitQuantity(
27    'darcy',
28    9.869233e-13*m**2,
29    symbol='D'
30)
31mD = millidarcy = UnitQuantity(
32    'millidarcy',
33    D/1000,
34    symbol='mD'
35)
36ha = hectare = UnitQuantity(
37    'hectare',
38    10000*m**2,
39    symbol='ha',
40    aliases=['hectares']
41)
42acre = international_acre = UnitQuantity(
43    'acre',
44    4046.8564224*m**2,
45    aliases=['acres', 'international_acre', 'international_acres'],
46    doc="exact. http://en.wikipedia.org/wiki/Acre"
47)
48US_survey_acre = UnitQuantity(
49    'US_survey_acre',
50    160*rod**2,
51    aliases=['US_survey_acres'],
52)
53
54del UnitQuantity, m, rod
55