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fix lgtm alert - variable pi

This commit is contained in:
Krishna Vedala 2020-07-10 22:40:46 -04:00
parent 81f4428569
commit df25df3236
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GPG Key ID: BA19ACF8FC8792F7
1 changed files with 11 additions and 8 deletions
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19
misc/cartesian_to_polar.c
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@ -1,8 +1,11 @@
/**
* @file
* @brief Function to convert a Cartesian co-ordinate to polar form.
*/
#define _USE_MATH_DEFINES /**< required for MS Visual C */
#include <math.h> #include <math.h>
#include <stdio.h> #include <stdio.h>
const double pi = 3.141592653589793238462643383279502884;
/** /**
give as arguments to the executable two x and y coordinates give as arguments to the executable two x and y coordinates
outputs a polar coordinate outputs a polar coordinate
@ -24,15 +27,15 @@ int main()
} }
else if (x < 0 && y > 0) else if (x < 0 && y > 0)
{ // Q2 { // Q2
thetaFinal = theta + pi; thetaFinal = theta + M_PI;
} }
else if (x < 0 && y < 0) else if (x < 0 && y < 0)
{ // Q3 { // Q3
thetaFinal = theta - pi; thetaFinal = theta - M_PI;
} }
else if (x > 0 && y < 0) else if (x > 0 && y < 0)
{ // Q4 { // Q4
thetaFinal = 2 * pi - theta; thetaFinal = 2 * M_PI - theta;
} }
} }
} }
@ -40,11 +43,11 @@ int main()
{ // exceptions when no actual angle is present { // exceptions when no actual angle is present
if (y > 0) if (y > 0)
{ {
thetaFinal = pi / 2; thetaFinal = M_PI / 2;
} }
else else
{ {
thetaFinal = -(pi / 2); thetaFinal = -(M_PI / 2);
} }
} }
if (y == 0) if (y == 0)
@ -55,7 +58,7 @@ int main()
} }
else else
{ {
thetaFinal = -pi; thetaFinal = -M_PI;
} }
} }
printf("%.2f %.2f\n", r, atan2(y, x)); printf("%.2f %.2f\n", r, atan2(y, x));