[C] Question about converting IEEE-754 via /r/learnprogramming

[C] Question about converting IEEE-754

My assignment is to take a bit sequence (32 bits) in IEEE-754 representation like this:


And using C, convert it to scientific notation like this: 6.102030 * 10-4


When I look up how to do this on the internet, i'm seeing TONS of stuff on how to convert the bit sequence to the x * 2y format, like this:

signbit | exponent | mantissa

0 | 01110100 | 00111111111011000001000

And then plugging all of those values into the formula (-1)s × (1 + m) × 2e, where s = signbit, m = mantissa , e = exponent. If you don't know what I'm referring to here's a youtube video.


The problem is this gives me an answer in x * 2y format, but I need it in x * 10y (scientific notation). Is it valid for me to convert 2y to 10y, or am I going about this the wrong way? How would I go about getting this into scientific notation in C?

Submitted July 09, 2017 at 03:01PM by programmergirl28
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