kstars
Handy math routines.
Functions | |
double | DegToRad (double num) |
double | RadToDeg (double num) |
void | SinCos (double Degrees, double *sina, double *cosa) |
Function Documentation
double DegToRad | ( | double | num | ) |
Convert degrees to radians.
- Parameters:
-
num number in degrees.
- Returns:
- number in radians.
double RadToDeg | ( | double | num | ) |
Convert radians to degrees.
- Parameters:
-
num number in radians.
- Returns:
- number in degrees.
void SinCos | ( | double | Degrees, | |
double * | sina, | |||
double * | cosa | |||
) |
Get the sin and cosine of a number.
The function attempts to use GNU sincos extension when possible. The sin and cosine values for Degrees are stored in the sina and cosa parameters.
- Parameters:
-
Degrees the number in degrees to return its sin and cosine. sina pointer to a double to hold the sin value. cosa pointer to a double to hold the cosine value.