Numerics
GEB uses different numbers representing various levels of precision.
Type | Precision |
| 1E-18 |
| 1E-27 |
| 1E-45 |
You can import them from pyflex:
>>> from pyflex.numeric import Wad, Ray, Rad
Converting Wad, Ray, Rad to a str shows the number in friendly format:
>>> Wad.from_number(1.2)Wad(1200000000000000000)>>> str(Wad.from_number(1.2))'1.200000000000000000'
Using the constructors directly will use the units of the number's precision. eg. Wad(1) is not equal to 1
>>> Wad(10) == Wad.from_number(10)False>>> Wad(10) == Wad.from_number(10 * 1E-18)True
Wad, Ray, and Rad can only perform addition, subtraction and division with another Wad, Ray, or Rad
>>> Rad(10) + Wad(10)Traceback (most recent call last):File "<stdin>", line 1, in <module>File "/Users/georgekellerman/reflexer/pyflex/lib/python3.8/site-packages/pyflex/numeric.py", line 320, in __add__raise ArithmeticErrorArithmeticError>>> Ray(10) - Ray(5)Ray(5)>>> Rad(10) / Rad.from_number(2)Rad(5)>>>​
Wad, Ray, and Rad can be multiplied by any Wad, Ray, and Rad and int.
The result is the type of the first number:
>>> x = Wad.from_number(1.2) * Rad.from_number(1)>>> type(x)<class 'pyflex.numeric.Wad'>>>> y = Rad.from_number(1) * Wad.from_number(1.2)>>> type(y)<class 'pyflex.numeric.Rad'>
Wad, Ray, and Rad all accept Wad, Ray, and Rad in the constructors. This is the canonical way to convert between the numbers.
>>> Rad(Wad(10))Rad(10000000000000000000000000000)
When converting to a number of lower precision (Rad to Ray/Wad or Ray to Wad) loss of precision will occur!
>>> Wad(Rad(10))Wad(0)>>> Ray(Rad(20))Ray(0)
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