C++ being superset of C, supports large number of useful mathematical functions. These functions are available in standard C++ and C to support various mathematical calculations. Instead of focussing on implementation, these functions can be directly used to simplify code and programs. C++ provides large set of mathematical functions which are stated below –
In order to use these functions you need to include header file- <math.h> or <cmath>.
- double sin(double) : This function takes angle (in degree) as an argument and return its sine value that could be verified using sine curve.
- double cos(double) : This function takes angle (in degree) as an argument and return its cosine value that could be verified using cosine curve.
- double tan(double) : This function takes angle (in degree) as an argument and return its tangent value. This could also be verified using Trigonometry as Tan(x) = Sin(x)/Cos(x).
- double sqrt(double) : This function takes number as an argument and return its square root value. Number can not be negative value.
- int abs(int) : This function takes integer number as an argument and return its absolute value. It means, the output will always be positive regardless of sign of input.
- double pow(double, double) : This function takes one argument as base and other as exponent.
- double hypot(double, double) : This function requires two sides of the right angled triangle to give output as its hypotenuse.
- double floor(double) : This functions returns the integer value lesser or equal to argument passed in the function.
- double fabs(double) : This function returns the absolute value of any number.
- double acos(double) : This function returns the arc cosine of argument. The argument to acos() must be in the range -1 to 1 ; otherwise, a domain error occurs.
- double asin(double) : This function returns the arc sine of argument. The argument to asin() must be in the range -1 to 1 ; otherwise, a domain error occurs.
- double atan(double) : This function returns the arc tangent of arg.
- double atan2(double, double) : This function returns the arc tangent of (double a)/(double b).
- double ceil(double) : This function returns the smallest integer as double not less than the argument provided.
- double cosh(double) : This function returns the hyperbolic cosine of argument provided. The value of argument provided must be in radians.
- double tanh(double) : This function returns the hyperbolic tangent of argument provided. The value of argument provided must be in radians.
- double log(double) : This function takes a number and returns the natural log of that number.
Sine value of x=2.3 : 0.745705 Cosine value of x=2.3 : -0.666276 Tangent value of x=2.3 : -1.11921 Square root value of y=0.25 : 0.5 Absolute value of z=-10 : 10 Power value: x^y = (2.3^0.25) : 1.23149 Hypotenuse having other two sides as x=3.0 and y=4.0 : 5 Floor value of x=4.56 is : 4 Absolute value of x=-4.57 is : 4.57 Arc Cosine value of x=1.0 : 0 Arc Sine value of x=1.0 : 1.5708 Arc Tangent value of x=1.0 : 0.785398 Ceiling value of y=12.3 : 13 Hyperbolic Cosine of x=57.3 : 3.83746e+24 Hyperbolic tangent of x=57.3 : 1 Log value of y=100.0 is : 4.60517
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- Virtual functions in derived classes
- Functions that cannot be overloaded in C++
- Some interesting facts about static member functions in C++
- Pure Functions
- Can virtual functions be private in C++?
- Virtual Functions and Runtime Polymorphism in C++ | Set 1 (Introduction)
- Can virtual functions be inlined?
- Macros vs Functions
- fill() and fill_n() functions in C++ STL
- Return from void functions in C++
- Forward List in C++ | Set 1 (Introduction and Important Functions)
- Forward List in C++ | Set 2 (Manipulating Functions)
- List in C++ | Set 2 (Some Useful Functions)
- isalpha() and isdigit() functions in C with cstring examples.
- strtok() and strtok_r() functions in C with examples
- strdup() and strndup() functions in C/C++
- Builtin functions of GCC compiler
- Binary Search functions in C++ STL (binary_search, lower_bound and upper_bound)
- Ceil and Floor functions in C++
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