add notes for versor/quaternion type to describe memory layout
@@ -36,10 +36,15 @@ typedef float vec2[2];
typedef float vec3[3];
typedef int ivec3[3];
typedef CGLM_ALIGN_IF(16) float vec4[4];
-typedef vec4 versor;
+typedef vec4 versor; /* |x, y, z, w| -> w is the last */
typedef vec3 mat3[3];
typedef CGLM_ALIGN_MAT vec4 mat4[4];
+/*
+ Important: cglm stores quaternion as [x, y, z, w] in memory since v0.4.0
+ it was [w, x, y, z] before v0.4.0 ( v0.3.5 and earlier ). w is real part.
+*/
+
#define GLM_E 2.71828182845904523536028747135266250 /* e */
#define GLM_LOG2E 1.44269504088896340735992468100189214 /* log2(e) */
#define GLM_LOG10E 0.434294481903251827651128918916605082 /* log10(e) */
