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yearn / yearn-api-archived

Collection of serverless API
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fix: fix number of days in year #95

Closed dudesahn closed 3 years ago

sambacha commented 3 years ago

According to the Gregorian Calendar, leap years usually occur every 4th year but are skipped every 100 years unless the year is divisible by 400. 400, 800, 1200, 1600, and 2000 ARE leap years but 100, 200,300, 500 . are not. Thus 2000 is a leap year but 1900 and 2100 are not. A four-century period will be missing 3 of its 100 Julian leap years, leaving 97. So the average year has 365 + 97/400 = 365.2425 days.

Calendar Table Reference | **** | **AverageYear(Days)** | **ErrorPerYear(Days)** | **ErrorRatio** | **CylcePeriod** | **1-DayShift** | **100-yearError(Days)** | |----------------------------------------------------|-----------------------|------------------------|----------------|-----------------|----------------|-------------------------| | 365 | 365 | 0.2422 | 6.63 xx10-4 | 1,508 | 4.129 | 24.22 | | Julian | 365.25 | -0.0078 | 2.14 xx10-5 | 46,826 | 128.2 | 0.78 | | Gregorian | 365.2425 | -0.0003 | 8.2 xx10-7 | 1,200,000 | 3,333.30 | 0.03 | | 4000 | 365.24225 | -0.00005 | 1.4 xx10-7 | 7,300,000 | 20,000 | 0.005 | | 2//900 | 365.2422 | -0.000022 | 6.1 xx10-8 | 16,000,000 | 45,000 | 0.002 | | Jalaali | 365.242424 | -0.000224 | 6.1 xx10-7 | 1,600,000 | 4,460 | 0.02 | | 31//128 | 365.24218750 | 0 .0000125 | 3.4 xx10-8 | 29,000,000 | 80,000 | 0.001 | source: https://pumas.nasa.gov/files/04_21_97_1.pdf

see @fubuloubu people do use the constant

fubuloubu commented 3 years ago

This makes me want to inject constants into Vyper's ABIs...