bits

bits

RPN bit manipulation calculator.

Installation

go install github.com/c2nes/bits@latest

Usage

From command line arguments,

$ bits 1 1 +
type    uint64
dec     2
hex     0x0000000000000002
bin     0b0000000000000000000000000000000000000000000000000000000000000010

From stdin,

$ echo '1 1 +' | bits
type    uint64
dec     2
hex     0x0000000000000002
bin     0b0000000000000000000000000000000000000000000000000000000000000010

Interactively,

$ bits
> 1
> 1
> +
> print
2 (uint64)
> 1 1 + print
2 (uint64)

As a script interpreter,

$ cat example.bits
#!/usr/bin/env bits

# Compute 2^30 as an untyped integer.
1 30 <<

# Cast to an unsigned 32 bit integer.
u32

# Interpret those bits as a float.
fbits

$ ./example.bits
type    float32
dec     2
hex     0x1p+01
fixed   2.000000000e+00
json    2
bits    0x40000000
        0b0 10000000 00000000000000000000000
          +        1          0b1 (0x000000)

Number formats

bits supports signed and unsigned integers with widths of 8, 16, 32 and 64 bits as well as single and double precision floats (32 and 64 bits respectively).

Numbers may be input in decimal, hexadecimal, or binary. Examples,

// Decimal integers
12345
-12345

// Decimal floats
123.45
0.5
.5
5.
5e10
5e-100

// Hex integers
0x1234
-0x1234

// Hex floats (exponent is decimal power of 2)
0x1.
0x0.5
0x1p40
-0x5.5p-2

// Binary integers
0b1001
-0b1001

// Binary floats (exponent is decimal power of 2)
0b10.01
-0b10.01
0b10.01p10
0b10.01p-5

Constants

Commands