Update affine.h

* to override float epsilon we just need to define GLM_FLT_EPSILON
* CGLM_USE_DEFAULT_EPSILON was redundant, also it forces to override system default epsilon which may not be good idea, because not all systems may support smaller epsilon values

CMakeLists.txt

@@ -18,7 +18,7 @@ else(CGLM_STATIC)
 endif()
 
 if(CGLM_USE_C99)
-  set(CMAKE_C_STANDARD 99)
+  set(C_STANDARD 99)
 endif()
 
 if(MSVC)
@@ -117,7 +117,6 @@ export(TARGETS ${PROJECT_NAME}
 )
 
 install(EXPORT      ${PROJECT_NAME}
-        FILE        "${PROJECT_NAME}Config.cmake"
         NAMESPACE   ${PROJECT_NAME}::
-        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})
+        DESTINATION ${CMAKE_INSTALL_LIBDIR}/${PROJECT_NAME}/cmake)
 

include/cglm/affine.h

@@ -425,7 +425,7 @@ bool
 glm_uniscaled(mat4 m) {
   CGLM_ALIGN(8) vec3 s;
   glm_decompose_scalev(m, s);
-  return glm_vec3_eq_all(s);
+  return glm_vec3_eq_eps(s, s[0]);
 }
 
 /*!
@@ -455,7 +455,7 @@ glm_decompose_rs(mat4 m, mat4 r, vec3 s) {
   glm_vec4_scale(r[1], 1.0f/s[1], r[1]);
   glm_vec4_scale(r[2], 1.0f/s[2], r[2]);
 
-  /* Note from Apple Open Source (assume that the matrix is orthonormal):
+  /* Note from Apple Open Source (asume that the matrix is orthonormal):
      check for a coordinate system flip.  If the determinant
      is -1, then negate the matrix and the scaling factors. */
   glm_vec3_cross(m[0], m[1], v);

include/cglm/box.h

@@ -228,8 +228,6 @@ glm_aabb_aabb(vec3 box[2], vec3 other[2]) {
  * https://github.com/erich666/GraphicsGems/blob/master/gems/BoxSphere.c
  * Solid Box - Solid Sphere test.
  *
- * Sphere Representation in cglm: [center.x, center.y, center.z, radii]
- *
  * @param[in]   box    solid bounding box
  * @param[in]   s      solid sphere
  */
@@ -239,13 +237,13 @@ glm_aabb_sphere(vec3 box[2], vec4 s) {
   float dmin;
   int   a, b, c;
 
-  a = (s[0] < box[0][0]) + (s[0] > box[1][0]);
+  a = s[0] >= box[0][0];
-  b = (s[1] < box[0][1]) + (s[1] > box[1][1]);
+  b = s[1] >= box[0][1];
-  c = (s[2] < box[0][2]) + (s[2] > box[1][2]);
+  c = s[2] >= box[0][2];
 
-  dmin  = glm_pow2((s[0] - box[!(a - 1)][0]) * (a != 0))
+  dmin  = glm_pow2(s[0] - box[a][0])
-        + glm_pow2((s[1] - box[!(b - 1)][1]) * (b != 0))
+        + glm_pow2(s[1] - box[b][1])
-        + glm_pow2((s[2] - box[!(c - 1)][2]) * (c != 0));
+        + glm_pow2(s[2] - box[c][2]);
 
   return dmin <= glm_pow2(s[3]);
 }

include/cglm/common.h

@@ -42,12 +42,18 @@
 #include "types.h"
 #include "simd/intrin.h"
 
-#ifndef CGLM_USE_DEFAULT_EPSILON
+/** CGLM_USE_DEFAULT_EPSILON is removed, to override float epsilon,
-#  ifndef GLM_FLT_EPSILON
+ *  just define GLM_FLT_EPSILON with epsilon value like below
-#    define GLM_FLT_EPSILON 1e-6
+ *
+ *  #define GLM_FLT_EPSILON 1e-6f
+ */
+
+#ifndef GLM_FLT_EPSILON
+#  ifndef FLT_EPSILON
+#    define GLM_FLT_EPSILON 1e-6f
+#  else
+#    define GLM_FLT_EPSILON FLT_EPSILON
 #  endif
-#else
-#  define GLM_FLT_EPSILON FLT_EPSILON
 #endif
 
 #endif /* cglm_common_h */

include/cglm/vec3-ext.h

@@ -237,9 +237,9 @@ glm_vec3_abs(vec3 v, vec3 dest) {
 CGLM_INLINE
 void
 glm_vec3_fract(vec3 v, vec3 dest) {
-  dest[0] = fminf(v[0] - floorf(v[0]), 0.999999940395355224609375f);
+  dest[0] = fminf(v[0] - floorf(v[0]), 0x1.fffffep-1f);
-  dest[1] = fminf(v[1] - floorf(v[1]), 0.999999940395355224609375f);
+  dest[1] = fminf(v[1] - floorf(v[1]), 0x1.fffffep-1f);
-  dest[2] = fminf(v[2] - floorf(v[2]), 0.999999940395355224609375f);
+  dest[2] = fminf(v[2] - floorf(v[2]), 0x1.fffffep-1f);
 }
 
 /*!

include/cglm/vec4-ext.h

@@ -268,10 +268,10 @@ glm_vec4_abs(vec4 v, vec4 dest) {
 CGLM_INLINE
 void
 glm_vec4_fract(vec4 v, vec4 dest) {
-  dest[0] = fminf(v[0] - floorf(v[0]), 0.999999940395355224609375f);
+  dest[0] = fminf(v[0] - floorf(v[0]), 0x1.fffffep-1f);
-  dest[1] = fminf(v[1] - floorf(v[1]), 0.999999940395355224609375f);
+  dest[1] = fminf(v[1] - floorf(v[1]), 0x1.fffffep-1f);
-  dest[2] = fminf(v[2] - floorf(v[2]), 0.999999940395355224609375f);
+  dest[2] = fminf(v[2] - floorf(v[2]), 0x1.fffffep-1f);
-  dest[3] = fminf(v[3] - floorf(v[3]), 0.999999940395355224609375f);
+  dest[3] = fminf(v[3] - floorf(v[3]), 0x1.fffffep-1f);
 }
 
 /*!

test/src/test_cam.c

@@ -35,9 +35,9 @@ TEST_IMPL(camera_decomp) {
   farVal  = 100.0f;
 
   glm_perspective(fovy, aspect, nearVal, farVal, proj);
-  ASSERT(fabsf(aspect  - glm_persp_aspect(proj)) < GLM_FLT_EPSILON)
+  ASSERT(fabsf(aspect  - glm_persp_aspect(proj)) < 1e-5f)
-  ASSERT(fabsf(fovy    - glm_persp_fovy(proj))   < GLM_FLT_EPSILON)
+  ASSERT(fabsf(fovy    - glm_persp_fovy(proj))   < 1e-5f)
-  ASSERT(fabsf(49.984f - glm_deg(glm_persp_fovy(proj))) < GLM_FLT_EPSILON)
+  ASSERT(fabsf(49.984f - glm_deg(glm_persp_fovy(proj))) < 1e-5f)
 
   glm_persp_sizes(proj, fovy, sizes);
 

test/src/test_common.h

@@ -106,7 +106,7 @@ test_rand_quat(versor q);
 CGLM_INLINE
 bool
 test_eq(float a, float b) {
-  return fabsf(a - b) <= GLM_FLT_EPSILON * 10;
+  return fabsf(a - b) <= 1e-5f;
 }
 
 CGLM_INLINE