Functions for inspecting IEEE 754 floating-point numbers in Julia

floatdump.jl

function floatdump(n::Float32)
    sign = bits(n)[1]
    exp  = bits(n)[2:9]
    mant = bits(n)[10:end]
    println("Sign: $sign $(sign == '1' ? "(-)" : "(+)")")
    println("Exponent: $exp ($(parseint(exp, 2) - 127) + 127)")
    println("Mantissa: $mant ($(parseint(mant, 2) / 2^23) * 2^23)")
end

function floatdump(n::Float64)
    sign = bits(n)[1]
    exp  = bits(n)[2:12]
    mant = bits(n)[13:end]
    println("Sign: $sign $(sign == '1' ? "(-)" : "(+)")")
    println("Exponent: $exp ($(parseint(exp, 2) - 1023) + 1023)")
    println("Mantissa: $mant ($(parseint(mant, 2) / 2^52) * 2^52)")
end