C++ Math nexttoward() Function

C++ Math nexttoward() Function with tutorial for beginners and professionals with examples on isgreaterequal(), less(), islessequal(), islessgreater(), isunordered(), exp(), frexp(), ldexp(), log(), log10(), modf(), exp2(), expm1(), log1p(), log2(), logb(), scalbn(), scalbln() etc.

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C++ Math nexttoward()

The nexttoword() function represents the next representable value in a specific direction. The nextafter() and nexttoward() both the functions work similar and return the same value. The only difference occurs in their syntax.

Syntax

float nexttoward(float from, long double to);
 double nexttoward(double from, long double to);
long double nexttoward(long double from, long double to);
double nexttoward(integral from, long double to);

Parameter

( from , to ) : These are the floating point values.

Return value

If 'from' equals to 'to', then it returns the value of 'from'.
If no error occurs, then the next representable value of 'from' is returned.

Example

Let's see a simple example.

#include 
#include
using namespace std;

int main()
{
        long double from=0.0;
        double to= -1.0;
        cout<<"Values of from and to are:"<

Output:

Values of from and to are:0, -1
-3.6452e-4951

In the above example, the 'from' and 'to' are of different type. The nexttoward() function returns the value i.e -3.6452e-4951.

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