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The process of including a floating-point number in a GList using C involves the following steps:

  1. Create a GList using the function glistalloc().

  2. Create a pointer to the floating-point number you want to include in the list.

  3. Use the function glistappend() to add the floating-point number to the end of the list. This function takes two arguments: the list you want to add the item to, and the item you want to add. In this case, the item is the pointer to the floating-point number.

  4. Repeat steps 2 and 3 for each additional floating-point number you want to add to the list.

Here's an example of how you might include three floating-point numbers in a GList:

GList *list = g_list_alloc(); // Create an empty list
double num1 = 3.14159; // Create the first floating-point number
double num2 = 2.71828; // Create the second floating-point number
double num3 = 1.41421; // Create the third floating-point number
g_list_append(list, &num1); // Add the first number to the list
g_list_append(list, &num2); // Add the second number to the list
g_list_append(list, &num3); // Add the third number to the list

Note that when you add a pointer to a floating-point number to the list, the actual value of the number is copied into the list. This means that if you later change the value of the original variable, the value in the list will not be affected.