fixed-value function
nounUK /fɪkst ˈvæljuː ˈfʌŋkʃən/
US /fɪkst ˈvæljuː ˈfʌŋkʃən/
A function that gives the same answer no matter what you put in.
The function that always returns 7 is a fixed-value function.
OTHER MEANINGS
2. A function whose output does not depend on its input.
No matter the input, the fixed-value function returned 42.
3. In programming, a routine that always returns the same predefined result.
The helper was a fixed-value function that always returned true.
4. A mathematical map that sends every element of its domain to a single element.
The fixed-value function maps every real number to zero.