Is there a Objective-C or C math function to constrain a variable between a Min and a Max?

Question

What I am looking for is a math function that constrains a primitive variable between a minimum and a maximum value in only one single function call, if it exists, in the standard math libraries for Objective-C.

I currently use:

float constrainedValue = fminf( maxValue, fmaxf( minValue, inValue ) );

Since I know that both fminf and fmaxf could potentially have instruction jumps or branches, it seems likely there could be a simple routine that could conjoin both of these operations into one, optimized function.

Related (solution using a macro): [How can I write a 'clamp' / 'clip' / 'bound' macro for returning a value in a given range?](http://stackoverflow.com/a/14770282/4573247) — dfrib, Mar 29 '16 at 20:39

score 1 · Answer 1 · edited May 23 '17 at 12:10

1

This topic is thoroughly discussed here: Fastest way to clamp a real (fixed/floating point) value?

'clamp' is the keyword I was looking for.

edited May 23 '17 at 12:10

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answered Mar 29 '16 at 21:42

Benjamin Van Citters

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Is there a Objective-C or C math function to constrain a variable between a Min and a Max?

1 Answers1