3. C( ++
Mathematical Functions by typy:
Rounding:
1.double cell(double x) Round up
2.double flor(double x) Round down
Absolute values
1.double fabs(double x) Returns absolute value x (floating-point variable)
4. 1. double sqrt(double x) Calculate the square root of x
2. double pow(double x) Calculate power X^y
3. double log(double x) Calculate natural logarithm Ln x
Trigonometric functions :
1. double cos(double x) Calculate cosin of argument cos x
Root, power, And logarithmic functions :
5. Mathematical Functions Example
Ceil ( x )
1. ceil ( 9.2 ) is 10.0
2. ceil ( -9.8 ) is -9.0
Floor ( X )
1. Floor ( 6.2 ) is 6.0 cile
2. Floor ( -6.8 ) is -7.0
Fabs ( x )
1. Fabs (5.1) is 5.1
2. Fabs (0.0) is 0.0 X
3. Fabs (-8.76) is 8.75
6. Sqrt ( X )
1. Sqrt ( 900 ) is 30 X
2. Sqrt ( 9 ) is 3
Pow ( X , Y )
1. Pow ( 2 , 7 ) is 2^7 = 128
Log ( X )
1. Log ( 2.719282) is 1.0 Ln
2. Log (7.389050) is 2.0
3. Cos ( X )
4. cos ( 0.0 ) is 1.0
