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Function Details : log

doublelog(double x) ;

Return Type : double

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

Read about return values of log function .

1st Parameter Type : double

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

1st Parameter

The input value for which the natural logarithm is to be computed.

Read more about parameters of log in parameters section

The logfunction in C language Calculates the natural logarithm of the specified number.

The log function computes the natural logarithm (base e) of x. If x is positive, the result is the natural logarithm of x. If x is zero or negative, a domain error occurs, and errno is set to EDOM.

The logfunction takes 1 parameter:

•
double `x`: The input value for which the natural logarithm is to be computed.

Computes the natural logarithm (base e) of the given input `x`. The function is defined for positive values of `x` and returns `-HUGE_VAL` for values less than or equal to 0. Returns the natural logarithm as a `double`.

The log function return value :

Returns the natural logarithm of x
If x is positive infinity, positive infinity is returned
If x is 0, negative infinity is returned and errno is set to ERANGE
For negative x (including negative infinity), a domain error occurs, and errno is set to EDOM

Output

This example demonstrates basic usage of log function to compute the natural logarithm of e.