C++ Math log2()

math erf() function

C++ Math erf() The erf() function computes the error function value of a parameter passed to the function. Syntax Suppose a number is 'x': float erf( float x); double erf( double x); long double erf( long double x); double erf( integral x); Parameter x: It is a floating point value. Return value It returns the error function...

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math asin() function

C++ Math asin() The function computes the inverse sine of a number given in radian. asin(x) = sin-1x Syntax Suppose a number is 'x'. Syntax would be: float asin(float x); double asin(double x); long double asin(long double x); double asin(integral x); Note: If the value passed is an integer type, then it is cast to...

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math rint() function

C++ Math rint() The function rounds off the given value to the nearest integer using current rounding mode. The current rounding mode is determined by fesetround(). For example: rint(7.9) = 8; if, fesetround(FE_DOWNWARD) then, rint(7.9) = 7; Syntax Suppose a number 'x'. Syntax would be: return_type rint(data_type x); Note: The return_type can be float, double...

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math cbrt() function

C++ Math cbrt() This function is used to find the cube root of a given number. Consider a argument 'arg' : Cube root of a number : ∛arg Syntax Syntax would be : double cbrt(double arg); float cbrt(float arg); long double cbrt(long double arg); double cbrt(integral arg); Parameter arg : It is the value of float or...

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math tan() function

C++ Math tan() Function In the C++ programming language, the finds the tangent of an angle specified in terms of radians. It is part of the <cmath> header file. It can take arguments of type float, double, or long double, and return a value equivalent...

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math exp2() function

C++ Math exp2() The function computes the base - 2 exponential function of a given number. Suppose a number is 'x': exp2(x) = 2<sup>x</sup> Syntax float exp2(float x); double exp2(double x); long double exp2(long double x); double exp2(integral x); Parameter x: It is the value of the exponent. Return value It returns, 2 raised to the power x....

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math atan2() function

C++ Math atan2() The function finds the inverse tangent of a coordinate. Suppose the coordinate is (x,y): atan2(y,x) = tan-1(y/x); Syntax Suppose the coordinate is (x,y). Syntax would be: float atan2(float y, float x); double atan2(double y, double x); long double atan2(long double y, long double x); Promoted atan2(Arithmetic1 y, Arithmetic x ); Parameter y: It represents...

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math scalbln() function

C++ Math scalbln() The function computes the product of a given number and FLT_RADX raised to the power of exponent. Suppose a number is 'x' and exponent is 'n': scalbn(x,n) = x * ( FLT_RADX)n Syntax float scalbln(float x, long int n); double scalbln(double x, long int n); long double scalbln(long double x,...

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math abs() function

C++ Math abs() The function finds the absolute value of a given number. Suppose a number is 'x': abs(x) = |x|; Difference between abs() and fabs() The abs() function does not support float or double type arguments while fabs() function supports float, double as well as integer type arguments. Syntax int abs( int...

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math islessgreater() function

C++ Math islessgreater() The islessgreater() fuinction determines whether the value of first argument is less than or greater than the value of second argument. If the value of first argument is less than or greater than the second argument then it returns 1 otherwise 0. Note: If one...

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