C header file contains <math.h>
C ++ header file contains <cmath>
| function |
|
| double cos（double） |
This function returns the cosine of the angle in radians (double type) |
| double tan（double） |
This function returns the tangent of the angle in radians (double type) |
| double sin（double） |
This function returns the sine of the angle in radians (double type) |
| double log（double） |
This function returns the natural logarithm |
| double pow（double x,double y） |
This function returns x to the power y |
| double hypot（double） |
This function returns the square root of the sum of squares of two arguments; that is, two parameters as a right triangle at right angles to the edge, the function returns the length of the hypotenuse. |
| double sqrt（double） |
This function returns the square root of |
| int abs（int） |
This function returns the absolute value of the integer |
| double fabs（double） |
This function returns the absolute value of any of a float |
| double floor（double） |
This function returns a value less than or equal to the largest integer arguments passed |