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Mario Hüttel 2022-08-05 21:47:33 +02:00
parent b00cc19e61
commit ac0f363a1e
1 changed files with 60 additions and 60 deletions
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shimatta_kenkyusho/shimatta_modules/EngineeringNumberConverter.py
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@ -1,67 +1,67 @@
class EngineeringNumberConverter():
prefixes = [
('y', 1e-24),
('z', 1e-21),
('a', 1e-18),
('f', 1e-15),
('p', 1e-12),
('n', 1e-9),
('u', 1e-6),
('m', 1e-3),
# We skip centi and dezi because no one really uses these besides for length measurements
('', 1),
# We also skip h for hekto
('k', 1e3),
('M', 1e6),
('G', 1e9),
('T', 1e12),
('P', 1e15),
('E', 1e18),
('Z', 1e21),
('Y', 1e24),
]
it_prefixes = [
('', 1),
('Ki', 1024),
('Mi', 1024*1024),
('Gi', 1024*1024*1024),
('Ti', 1024*1024*1024*1024)
]
prefixes = [
('y', 1e-24),
('z', 1e-21),
('a', 1e-18),
('f', 1e-15),
('p', 1e-12),
('n', 1e-9),
('u', 1e-6),
('m', 1e-3),
# We skip centi and dezi because no one really uses these besides for length measurements
('', 1),
# We also skip h for hekto
('k', 1e3),
('M', 1e6),
('G', 1e9),
('T', 1e12),
('P', 1e15),
('E', 1e18),
('Z', 1e21),
('Y', 1e24),
]
it_prefixes = [
('', 1),
('Ki', 1024),
('Mi', 1024*1024),
('Gi', 1024*1024*1024),
('Ti', 1024*1024*1024*1024)
]
@classmethod
def number_to_engineering(c, number, it_unit = False):
"""
Convert a number to engineering SI syntax with prefix.
This function will return a tuple of (new_number, prefix)
"""
if it_unit:
used_prefixes = c.it_prefixes
else:
used_prefixes = c.prefixes
@classmethod
def number_to_engineering(c, number, it_unit=False):
"""
Convert a number to engineering SI syntax with prefix.
This function will return a tuple of (new_number, prefix)
"""
if it_unit:
used_prefixes = c.it_prefixes
else:
used_prefixes = c.prefixes
if (len(used_prefixes) < 2):
return (number / used_prefixes[0][1], used_prefixes[0])
if (len(used_prefixes) < 2):
return (number / used_prefixes[0][1], used_prefixes[0])
for i, (prefix, scale) in enumerate(used_prefixes[1:], 1):
if number < scale:
return (number / used_prefixes[i-1][1], used_prefixes[i-1][0])
for i, (prefix, scale) in enumerate(used_prefixes[1:], 1):
if number < scale:
return (number / used_prefixes[i-1][1], used_prefixes[i-1][0])
return (number / used_prefixes[-1][1], used_prefixes[-1][0])
return (number / used_prefixes[-1][1], used_prefixes[-1][0])
@classmethod
def engineering_to_number(c, input):
cleaned_input = input.strip().replace(' ', '')
@classmethod
def engineering_to_number(c, input):
cleaned_input = input.strip().replace(' ', '')
selected_scaling = 1
selected_scaling = 1
for (prefix, scale) in c.prefixes+c.it_prefixes:
if prefix == '':
continue
if cleaned_input.endswith(prefix):
cleaned_input = cleaned_input.replace(prefix, '')
selected_scaling = scale
break
for (prefix, scale) in c.prefixes+c.it_prefixes:
if prefix == '':
continue
if cleaned_input.endswith(prefix):
cleaned_input = cleaned_input.replace(prefix, '')
selected_scaling = scale
break
return float(cleaned_input) * selected_scaling
return float(cleaned_input) * selected_scaling