From: Keith Packard <keithp@keithp.com>
Date: Mon, 28 Oct 2013 06:10:13 +0000 (-0700)
Subject: altos: Mark arguments to quaternion functions as const
X-Git-Tag: 1.2.9.4~35
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=616977d2955da13383a1869b9ccdb07338172109;ds=sidebyside

altos: Mark arguments to quaternion functions as const

Lets us pass constants without the compile whinging

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/core/ao_quaternion.h b/src/core/ao_quaternion.h
index f4b8aaa4..1c0617c4 100644
--- a/src/core/ao_quaternion.h
+++ b/src/core/ao_quaternion.h
@@ -26,8 +26,8 @@ struct ao_quaternion {
 };
 
 static inline void ao_quaternion_multiply(struct ao_quaternion *r,
-					  struct ao_quaternion *a,
-					  struct ao_quaternion *b)
+					  const struct ao_quaternion *a,
+					  const struct ao_quaternion *b)
 {
 	struct ao_quaternion	t;
 #define T(_a,_b)	(((a)->_a) * ((b)->_b))
@@ -40,7 +40,7 @@ static inline void ao_quaternion_multiply(struct ao_quaternion *r,
 }
 
 static inline void ao_quaternion_conjugate(struct ao_quaternion *r,
-					   struct ao_quaternion *a)
+					   const struct ao_quaternion *a)
 {
 	r->r = a->r;
 	r->x = -a->x;
@@ -48,7 +48,7 @@ static inline void ao_quaternion_conjugate(struct ao_quaternion *r,
 	r->z = -a->z;
 }
 
-static inline float ao_quaternion_normal(struct ao_quaternion *a)
+static inline float ao_quaternion_normal(const struct ao_quaternion *a)
 {
 #define S(_a)	(((a)->_a) * ((a)->_a))
 	return S(r) + S(x) + S(y) + S(z);
@@ -56,7 +56,7 @@ static inline float ao_quaternion_normal(struct ao_quaternion *a)
 }
 
 static inline void ao_quaternion_scale(struct ao_quaternion *r,
-				       struct ao_quaternion *a,
+				       const struct ao_quaternion *a,
 				       float b)
 {
 	r->r = a->r * b;
@@ -66,7 +66,7 @@ static inline void ao_quaternion_scale(struct ao_quaternion *r,
 }
 
 static inline void ao_quaternion_normalize(struct ao_quaternion *r,
-					   struct ao_quaternion *a)
+					   const struct ao_quaternion *a)
 {
 	float	n = ao_quaternion_normal(a);