Implementation 1 returns the magnitude of the vector that would result from a regular 3D cross product of the input vectors, taking their Z values implicitly as 0 (i.e. treating the 2D space as a plane in the 3D space). The 3D cross product will be perpendicular to that plane, and thus have 0 X … Read more
c is double, thus you cannot use the modulo operator %. Use fmod() instead. So change this: to this: As Slava mentioned, you could have used an int instead, like this: which wouldn’t require the use of fmod(). It’s important to understand that the modulo operator % works with ints. As πάντα ρέι mentioned, there … Read more
There is an operator missing, likely a *: The “is not callable” occurs because the parenthesis — and lack of operator which would have switched the parenthesis into precedence operators — make Python try to call the result of -3.7 (a float) as a function, which is not allowed. The parenthesis are also not needed in this case, the following may … Read more
The division operator is /, not \
The division operator is /, not \
Will result always be the floor of the division? What is the defined behavior? Not quite. It rounds toward 0, rather than flooring. 6.5.5 Multiplicative operators 6 When integers are divided, the result of the / operator is the algebraic quotient with any fractional part discarded.88) If the quotient a/b is representable, the expression (a/b)*b … Read more
You can use exp(x) function of math library, which is same as e^x. Hence you may write your code as: I have modified the equation by replacing 1/2 as 0.5. Else for Python <2.7, we’ll have to explicitly type cast the division value to float because Python round of the result of division of two … Read more
All integers that can be represented by floating point numbers have an exact representation. So you can safely use int on the result. Inexact representations occur only if you are trying to represent a rational number with a denominator that is not a power of two. That this works is not trivial at all! It’s a property … Read more
**: exponentiation ^: exclusive-or (bitwise) %: modulus //: divide with integral result (discard remainder)
**: exponentiation ^: exclusive-or (bitwise) %: modulus //: divide with integral result (discard remainder)