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2. Math constant PI value in C - Stack Overflow

   stackoverflow.com/questions/9912151

   #define M_PI acos(-1.0) It should give you exact PI number that math functions are working with. So if they change PI value they are working with in tangent or cosine or sine, then your program should be always up-to-dated ;)

3. How to use the PI constant in C++ - Stack Overflow

   stackoverflow.com/questions/1727881

   Values like M_PI, M_PI_2, M_PI_4, etc are not standard C++ so a constexpr seems a better solution. Different const expressions can be formulated that calculate the same pi and it concerns me whether they (all) provide me the full accuracy. The C++ standard does not explicitly mention how to calculate pi.

4. algorithm - How is pi (π) calculated? - Stack Overflow

   stackoverflow.com/questions/2654749

   "π IN THE MANDELBROT SET" explores the curious relationship between a sequence of points on the complex plane and how computing their "Mandelbrot number" (for lack a better term ... the number of iterations required to determine that the points in the sequence are not members of the Mandelbrot set) relates to PI.

5. How do I calculate PI in C#? - Stack Overflow

   stackoverflow.com/questions/39395

   h is usually a power of 2 so that the divide can be done easily with a shift (or subtracting from the exponent on a double). h also wants to be the radius r of your circle. An easy start point would be x = r, y = 0, and then to count c the number of steps until x <= 0 to plot a quater of a circle. PI is 4 * c / r or PI is 4 * c / h

6. PI and accuracy of a floating-point number - Stack Overflow

   stackoverflow.com/questions/507819

   "In this case pi (3.141592653589793), has been encoded into the double precision floating point number. Note that the true value of this double precision number is 3.14159265358979311599796346854. There are multiple ways to store a decimal number in binary with a varying level of precision."

7. how to use math.pi in java - Stack Overflow

   stackoverflow.com/questions/12594058

   I am having problems converting this formula V = 4/3 π r^3. I used Math.PI and Math.pow, but I get this error: ';' expected Also, the diameter variable doesn't work.

8. vb.net - How can I calculate pi (π) in VB? - Stack Overflow

   stackoverflow.com/questions/790365

   Trying to calculate Pi to N number of decimals with C#. 2. Questions regarding Pi calculating program. 3.

9. 1000 digits of pi in Python - Stack Overflow

   stackoverflow.com/questions/9004789

   try: # import version included with old SymPy from sympy.mpmath import mp except ImportError: # import newer version from mpmath import mp mp.dps = 1000 # set number of digits print(mp.pi) # print pi to a thousand places

10. python - Calculate PI using Random Numbers - Stack Overflow

    stackoverflow.com/questions/46751718

    In your function main() you want to experiment and see if the accuracy of PI increases with the number of throws on the dartboard. You will compare your result with the value given by math.pi. The quantity Difference in the output is your calculated value of PI minus math.pi. Use the following number of throws to run your experiment - 100, 1000 ...

11. python - Print pi to a number of decimal places - Stack Overflow

    stackoverflow.com/questions/45416626

    >>> number_of_places = 6 >>> '{:.{}f}'.format(pi, number_of_places) '3.141593' In your original approach, I guess you're trying to pick a number of digits using number_of_places as the control variable of the loop, which is quite hacky but does not work in your case because the initial number_of_digits entered by the user is never used.