| package org.checkerframework.checker.units.qual; |
| |
| /** |
| * SI prefixes. |
| * |
| * <p>From <a |
| * href="https://en.wikipedia.org/wiki/SI_prefix">http://en.wikipedia.org/wiki/SI_prefix</a>: |
| * |
| * <pre> |
| * yotta Y 1000^8 10^24 1000000000000000000000000 Septillion Quadrillion 1991 |
| * zetta Z 1000^7 10^21 1000000000000000000000 Sextillion Trilliard 1991 |
| * exa E 1000^6 10^18 1000000000000000000 Quintillion Trillion 1975 |
| * peta P 1000^5 10^15 1000000000000000 Quadrillion Billiard 1975 |
| * tera T 1000^4 10^12 1000000000000 Trillion Billion 1960 |
| * giga G 1000^3 10^9 1000000000 Billion Milliard 1960 |
| * mega M 1000^2 10^6 1000000 Million 1960 |
| * kilo k 1000^1 10^3 1000 Thousand 1795 |
| * hecto h 1000^2/3 10^2 100 Hundred 1795 |
| * deca da 1000^1/3 10^1 10 Ten 1795 |
| * 1000^0 10^0 1 One |
| * deci d 1000^-1/3 10^-1 0.1 Tenth 1795 |
| * centi c 1000^-2/3 10^-2 0.01 Hundredth 1795 |
| * milli m 1000^-1 10^-3 0.001 Thousandth 1795 |
| * micro my 1000^-2 10^-6 0.000001 Millionth 1960 |
| * nano n 1000^-3 10^-9 0.000000001 Billionth Milliardth 1960 |
| * pico p 1000^-4 10^-12 0.000000000001 Trillionth Billionth 1960 |
| * femto f 1000^-5 10^-15 0.000000000000001 Quadrillionth Billiardth 1964 |
| * atto a 1000^-6 10^-18 0.000000000000000001 Quintillionth Trillionth 1964 |
| * zepto z 1000^-7 10^-21 0.000000000000000000001 Sextillionth Trilliardth 1991 |
| * yocto y 1000^-8 10^-24 0.000000000000000000000001 Septillionth Quadrillionth 1991 |
| * </pre> |
| * |
| * @checker_framework.manual #units-checker Units Checker |
| */ |
| public enum Prefix { |
| /** SI prefix for 10^24. */ |
| yotta, |
| /** SI prefix for 10^21. */ |
| zetta, |
| /** SI prefix for 10^18. */ |
| exa, |
| /** SI prefix for 10^15. */ |
| peta, |
| /** SI prefix for 10^12. */ |
| tera, |
| /** SI prefix for 10^9. */ |
| giga, |
| /** SI prefix for 10^6. */ |
| mega, |
| /** SI prefix for 10^3. */ |
| kilo, |
| /** SI prefix for 10^2. */ |
| hecto, |
| /** SI prefix for 10^1. */ |
| deca, |
| /** SI prefix for 10^0, or 1. */ |
| one, |
| /** SI prefix for 10^-1. */ |
| deci, |
| /** SI prefix for 10^-2. */ |
| centi, |
| /** SI prefix for 10^-3. */ |
| milli, |
| /** SI prefix for 10^-6. */ |
| micro, |
| /** SI prefix for 10^-9. */ |
| nano, |
| /** SI prefix for 10^-12. */ |
| pico, |
| /** SI prefix for 10^-15. */ |
| femto, |
| /** SI prefix for 10^-18. */ |
| atto, |
| /** SI prefix for 10^-21. */ |
| zepto, |
| /** SI prefix for 10^-24. */ |
| yocto |
| } |
