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Questions - software-quality

In C++, can the sum of two squared float be negative?

I have a snippet of code that compute the sum of two squared floats: float a, b, c; // assign some random float to b and c a = b*b+c*c; Can a, the sum of the two squared floats, be negative? The orig...
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Alessandro Jacopson

c++

floating-point

software-quality

Votes: 0

Answers: 1

Latest Answer

It's not possible under IEEE754, as there is no wrap-around behaviour defined for float or double. Let's assume that you are defining a to be negative if a < 0.0 is true. That conveniently allows u...
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Bathsheba

Reason for using custom true false values in frameworks

I was reading the GLFW library and I noticed they use GLFW_TRUE(1) and GLFW_FALSE(0). Now I've already seen that in other frameworks as well,making their own custom true/false identifiers. Is there an...
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laegirl

c

frameworks

glfw

software-design

software-quality

Votes: 0

Answers: 4

Latest Answer

I guess it is for backward compatibility reasons. The stdbool.h header was introduced in the C99 standard.
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nza

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