How to code a modulo operator in C C Obj-C that handles negative numbers

As a mathematician, one of my pet peeves of C-derived languages is :

(-1) % 8 // comes out as -1, and not 7

fmodf(-1,8) // fails similarly

What is the most effective solution?

Templates and operator overloading are both possible in C++, but both are unfamiliar to me.

Thank you for providing examples.

Jul 27, 2022 in C++ by Nicholas
• 7,760 points • 418 views

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