Page 19 - PROGRAMMING IN C_Neat

 General Form:

double cos(double a);

 Example:
double x = cos(3.14/2); Output:
x = 0 (approx.)

3. tan():
 Used to find the tan value of its argument.
 General Form:

double tan(double a);

 Example:
double x = tan(3.14/2);

4. exp():
 Used to find the exponent value of its argument.
 General Form:
double exp(double a);

 Example:
double x = exp(4.6);  x = e 4.6

5. floor():
 Used to round down a float number.
 General Form:
double floor(double a);

 Example:
double x = floor(93.58); Output:
x = 93

6. ceil():
 Used to round up a float number.
 General Form:

double ceil(double a);

 Example:
double x = ceil(93.58); Output:
x = 94

7. abs():
 Used to find the absolute value of an integer. Absolute value is the value without sign.
 General Form:

int abs(int a);

 Example:
int x = abs(-6); Output:
x = 6

8. pow():
 Used to find the power of a value.
 General Form:

double pow(double a, double b);