making some functions constexpr

Erfan-Ahmadi · Erfan-Ahmadi · commit b1c53c84208f · 2023-02-01T16:57:01.000+03:30
diff --git a/include/nbl/core/math/floatutil.h b/include/nbl/core/math/floatutil.h
@@ -49,21 +49,21 @@ NBL_FORCE_INLINE matrix4SIMD ROUNDING_ERROR<matrix4SIMD>();
 #endif
 //! Constant for PI.
 template<typename T>
-NBL_FORCE_INLINE T PI()
+NBL_FORCE_INLINE constexpr T PI()
 {
 	return T(3.14159265358979323846);
 }
 
 //! Constant for reciprocal of PI.
 template<typename T>
-NBL_FORCE_INLINE T RECIPROCAL_PI()
+NBL_FORCE_INLINE constexpr T RECIPROCAL_PI()
 {
 	return T(1.0) / PI<T>();
 }
 
 //! Constant for half of PI.
 template<typename T>
-NBL_FORCE_INLINE T HALF_PI()
+NBL_FORCE_INLINE constexpr T HALF_PI()
 {
 	return PI<T>() * T(0.5);
 }

Original file line number	Diff line number	Diff line change
`@@ -49,21 +49,21 @@ NBL_FORCE_INLINE matrix4SIMD ROUNDING_ERROR<matrix4SIMD>();`
`49`	`49`	`#endif`
`50`	`50`	`//! Constant for PI.`
`51`	`51`	`template<typename T>`
`52`		`-NBL_FORCE_INLINE T PI()`
	`52`	`+NBL_FORCE_INLINE constexpr T PI()`
`53`	`53`	`{`
`54`	`54`	`return T(3.14159265358979323846);`
`55`	`55`	`}`
`56`	`56`
`57`	`57`	`//! Constant for reciprocal of PI.`
`58`	`58`	`template<typename T>`
`59`		`-NBL_FORCE_INLINE T RECIPROCAL_PI()`
	`59`	`+NBL_FORCE_INLINE constexpr T RECIPROCAL_PI()`
`60`	`60`	`{`
`61`	`61`	`return T(1.0) / PI<T>();`
`62`	`62`	`}`
`63`	`63`
`64`	`64`	`//! Constant for half of PI.`
`65`	`65`	`template<typename T>`
`66`		`-NBL_FORCE_INLINE T HALF_PI()`
	`66`	`+NBL_FORCE_INLINE constexpr T HALF_PI()`
`67`	`67`	`{`
`68`	`68`	`return PI<T>() * T(0.5);`
`69`	`69`	`}`