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Function Details : nexttoward

doublenexttoward(double x,long double y) ;

Return Type : double

Double-precision floating point (±1.7E±308, ~15 decimal digits)
Read about return values of nexttoward function .

1st Parameter Type : double

Double-precision floating point (±1.7E±308, ~15 decimal digits)

1st Parameter

The starting floating-point value.

2nd Parameter Type : long double

A floating-point type with extended precision, typically larger than `double` and used for high-precision arithmetic. The size and precision depend on the platform but are often 80 or 128 bits.

2nd Parameter

The target long double value towards which `x` will be incremented or decremented.

Read more about parameters of nexttoward in parameters section
The nexttowardfunction in C language Returns the next representable value of the first argument towards the second argument, specified as a long double.
The nexttoward function returns the next representable double-precision floating-point value following x in the direction of y (specified as a long double). If x equals y, the function returns y converted to double. If either x or y is NaN, NaN is returned. This function is similar to nextafter but allows for higher precision in the second argument.
The nexttowardfunction takes 2 parameters:
  • •
    double `x`: The starting floating-point value.
  • •
    long double `y`: The target long double value towards which `x` will be incremented or decremented.
Returns the next representable floating-point value after `x` in the direction of `y`, where `y` is of type `long double` for extended precision. If `x` equals `y`, the function returns `y`. Handles subnormal values and overflows, returning ±infinity in the latter case. Useful for precise floating-point arithmetic with extended precision targets.
The nexttoward function return value :
  • Returns the next representable double value after x in the direction of y

Output

This example demonstrates how nexttoward finds the next representable double value towards a long double direction.