A cli calculator for myself (mostly firmware programming scenario)
cal "2+(1-5)*3/4"
Outputs -1
cal "~(0xF<<4)" -x
Outputs FFFFFF0F
cal "0b101 b^ b!0" -b
Outputs 11111010
cal "ascii(0x5f465648)"
Outputs _FVH
Number literals in the expression accepts following format:
- Decimal numbers
- Hexadecimal numbers with leading
0x - Octal numbers with leading
0o - Binary number with leading
0b - Floating point numbers in scientific notation
--hex/-x: Hexadecimal--oct/-o: Octal--bin/-b: Binary--bits: List of set bits
| Operator | Meaning |
|---|---|
| +, -, *, / | As normal |
| ^^ | Exponent / power |
| % | Mod |
| & | Bit-wise AND |
| | | Bit-wise OR |
| [bit width]^ | Bit-wise XOR |
| [bit width]!, [bit width]~ | Bit-wise NOT |
| <<, >> | Bit-wise shift |
| FunctionName() | Function call |
| Bit width indicator | bits count |
|---|---|
| b | 8 |
| w | 16 |
| dw (default) | 32 |
| l | 64 |
| ll | 128 |
| Name | Usage |
|---|---|
| ascii | Convert string to an integer consist of ascii code of the string characters. Or vise versa. |
| rev | Reverse bytes in an integer or characters in an string |
Adding character k, m, g, t, p after a decimal integer multiply its value.
| Shortcut | Multiple |
|---|---|
| k | 1024 |
| m | 1024k, 1048576 |
| g | 1024m, 1073741824 |
| t | 1024g, 1099511627776 |
| p | 1024t, 1125899906842624 |
bit# converts into 1 << #, like bit3 equals 8
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