this post was submitted on 15 Jan 2025
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kalk - command line calculator app for developers (kalk.dev)
submitted 5 days ago by Kissaki to c/opensource
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GitHub repo

Examples

> (15 kg/m) * 7cm
# (((15 * kg) / m)) * 7 * cm
out = 1050 * g

> 1 |> cos |> log
# 1 |> cos |> log
out = -0.6156264703860141

> display dev
# Display mode: dev (Developer)
>>> 1.5
# 1.5
out = 1.5
    # IEEE 754 - double - 64-bit
    #
    = 0x_3FF80000_00000000
    = 0x____3____F____F____8____0____0____0____0____0____0____0____0____0____0____0____0
    #    seee eeee eeee ffff ffff ffff ffff ffff ffff ffff ffff ffff ffff ffff ffff ffff
    = 0b_0011_1111_1111_1000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000
    #   63                48                  32                  16                   0
    #
    # sign    exponent              |-------------------- fraction --------------------|
    =   1 * 2 ^ (1023 - 1023) * 0b1.1000000000000000000000000000000000000000000000000000
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[–] BehindTheBarrier 2 points 5 days ago

That data display is really cool, since I don't know too much about how a specific number is presented like that double.

That unit calculation is also pretty cool.

[–] ulterno 0 points 4 days ago

I tend to use qalc mostly and this seems like a nice addition.
The dev display would have been very useful in a lot of my past projects.