Get rid of include guards on sub-headers.

35 files changed, 0 insertions, 176 deletions

diff --git a/libdimension/compiler.h b/libdimension/compiler.h
index 7166a19..cb77ca6 100644
--- a/libdimension/compiler.h
+++ b/libdimension/compiler.h
@@ -23,9 +23,6 @@
  * Compiler abstractions.
  */
 
-#ifndef DIMENSION_IMPL_COMPILER_H
-#define DIMENSION_IMPL_COMPILER_H
-
 #include <stdbool.h>
 
 #ifdef DMNSN_PROFILE
@@ -48,5 +45,3 @@
   #define DMNSN_HOT
   #define DMNSN_INTERNAL
 #endif
-
-#endif /* DIMENSION_IMPL_COMPILER_H */
diff --git a/libdimension/dimension/array.h b/libdimension/dimension/array.h
index 18affd7..dab4d74 100644
--- a/libdimension/dimension/array.h
+++ b/libdimension/dimension/array.h
@@ -23,9 +23,6 @@
  * Simple dynamic arrays.
  */
 
-#ifndef DIMENSION_ARRAY_H
-#define DIMENSION_ARRAY_H
-
 #include <stddef.h> /* For size_t */
 #include <stdlib.h> /* For qsort() */
 #include <string.h> /* For memcpy() */
@@ -322,5 +319,3 @@ dmnsn_array_sort(dmnsn_array *array, dmnsn_array_comparator_fn *comparator)
   for (type i = dmnsn_array_last(array);                \
        i - (type)dmnsn_array_first(array) >= 0;         \
        --i)
-
-#endif /* DIMENSION_ARRAY_H */
diff --git a/libdimension/dimension/camera.h b/libdimension/dimension/camera.h
index f3b3063..c3ad65b 100644
--- a/libdimension/dimension/camera.h
+++ b/libdimension/dimension/camera.h
@@ -23,9 +23,6 @@
  * Cameras.
  */
 
-#ifndef DIMENSION_CAMERA_H
-#define DIMENSION_CAMERA_H
-
 /* Forward-declare dmnsn_camera */
 typedef struct dmnsn_camera dmnsn_camera;
 
@@ -71,5 +68,3 @@ void dmnsn_delete_camera(dmnsn_camera *camera);
  * @return The ray through (\p x, \p y).
  */
 dmnsn_line dmnsn_camera_ray(const dmnsn_camera *camera, double x, double y);
-
-#endif /* DIMENSION_CAMERA_H */
diff --git a/libdimension/dimension/cameras.h b/libdimension/dimension/cameras.h
index 70e9dc5..d7f44b2 100644
--- a/libdimension/dimension/cameras.h
+++ b/libdimension/dimension/cameras.h
@@ -23,9 +23,6 @@
  * Pre-defined camera types.
  */
 
-#ifndef DIMENSION_CAMERAS_H
-#define DIMENSION_CAMERAS_H
-
 /**
  * A perspective camera.  The camera is located at the origin, looking at
  * (0, 0, 1).  The feild of view is the section of the plane z = 1 from
@@ -34,5 +31,3 @@
  * @return A perspective camera.
  */
 dmnsn_camera *dmnsn_new_perspective_camera(void);
-
-#endif /* DIMENSION_CAMERAS_H */
diff --git a/libdimension/dimension/canvas.h b/libdimension/dimension/canvas.h
index b4d0cc4..6938c0e 100644
--- a/libdimension/dimension/canvas.h
+++ b/libdimension/dimension/canvas.h
@@ -23,9 +23,6 @@
  * A canvas which is rendered to.
  */
 
-#ifndef DIMENSION_CANVAS_H
-#define DIMENSION_CANVAS_H
-
 #include <stddef.h>
 
 /** A canvas, or image. */
@@ -121,5 +118,3 @@ void dmnsn_set_pixel(dmnsn_canvas *canvas, size_t x, size_t y,
  * @param[in]     color   The color to paint it with.
  */
 void dmnsn_clear_canvas(dmnsn_canvas *canvas, dmnsn_color color);
-
-#endif /* DIMENSION_CANVAS_H */
diff --git a/libdimension/dimension/color.h b/libdimension/dimension/color.h
index 8db5158..504ec47 100644
--- a/libdimension/dimension/color.h
+++ b/libdimension/dimension/color.h
@@ -23,9 +23,6 @@
  * Color-related types and operations.
  */
 
-#ifndef DIMENSION_COLOR_H
-#define DIMENSION_COLOR_H
-
 #include <stdbool.h>
 
 /** A color value. */
@@ -98,5 +95,3 @@ dmnsn_color dmnsn_apply_translucency(dmnsn_color filtered, dmnsn_color filter);
 dmnsn_color dmnsn_apply_filter(dmnsn_color color, dmnsn_color filter);
 /** Illuminate \p color with \p light. */
 dmnsn_color dmnsn_color_illuminate(dmnsn_color light, dmnsn_color color);
-
-#endif /* DIMENSION_COLOR_H */
diff --git a/libdimension/dimension/csg.h b/libdimension/dimension/csg.h
index f5e43d1..9d86f71 100644
--- a/libdimension/dimension/csg.h
+++ b/libdimension/dimension/csg.h
@@ -23,9 +23,6 @@
  * Constructive solid geometry
  */
 
-#ifndef DIMENSION_CSG_H
-#define DIMENSION_CSG_H
-
 /**
  * CSG union.
  * @param[in] objects  The objects from which to compose the union.
@@ -56,5 +53,3 @@ dmnsn_object *dmnsn_new_csg_difference(dmnsn_object *A, dmnsn_object *B);
  * @return The merge of \p A and \p B.
  */
 dmnsn_object *dmnsn_new_csg_merge(dmnsn_object *A, dmnsn_object *B);
-
-#endif /* DIMENSION_CSG_H */
diff --git a/libdimension/dimension/error.h b/libdimension/dimension/error.h
index 23ce706..ae8ba01 100644
--- a/libdimension/dimension/error.h
+++ b/libdimension/dimension/error.h
@@ -26,9 +26,6 @@
  * the set resilience.
  */
 
-#ifndef DIMENSION_ERROR_H
-#define DIMENSION_ERROR_H
-
 #include <stdbool.h>
 
 /**
@@ -99,5 +96,3 @@ dmnsn_fatal_error_fn *dmnsn_get_fatal_error_fn(void);
  *                   return.
  */
 void dmnsn_set_fatal_error_fn(dmnsn_fatal_error_fn *fatal);
-
-#endif /* DIMENSION_ERROR_H */
diff --git a/libdimension/dimension/finish.h b/libdimension/dimension/finish.h
index 254a7c0..f2b1df7 100644
--- a/libdimension/dimension/finish.h
+++ b/libdimension/dimension/finish.h
@@ -23,9 +23,6 @@
  * Object finishes.
  */
 
-#ifndef DIMENSION_FINISH_H
-#define DIMENSION_FINISH_H
-
 /* Forward-declare dmnsn_finish */
 typedef struct dmnsn_finish dmnsn_finish;
 
@@ -99,5 +96,3 @@ dmnsn_finish *dmnsn_new_finish(void);
  * @param[in,out] finish  The finish to delete.
  */
 void dmnsn_delete_finish(dmnsn_finish *finish);
-
-#endif /* DIMENSION_FINISH_H */
diff --git a/libdimension/dimension/finishes.h b/libdimension/dimension/finishes.h
index 074521e..e3c308c 100644
--- a/libdimension/dimension/finishes.h
+++ b/libdimension/dimension/finishes.h
@@ -23,9 +23,6 @@
  * Pre-defined finishes.
  */
 
-#ifndef DIMENSION_FINISHES_H
-#define DIMENSION_FINISHES_H
-
 /**
  * Add two finishes together.
  * @param[in,out] f1  The first finish.
@@ -65,5 +62,3 @@ dmnsn_finish *dmnsn_new_phong_finish(double specular, double exp);
  */
 dmnsn_finish *dmnsn_new_reflective_finish(dmnsn_color min, dmnsn_color max,
                                           double falloff);
-
-#endif /* DIMENSION_FINISHES_H */
diff --git a/libdimension/dimension/geometry.h b/libdimension/dimension/geometry.h
index 724c9cc..74807f7 100644
--- a/libdimension/dimension/geometry.h
+++ b/libdimension/dimension/geometry.h
@@ -23,9 +23,6 @@
  * Core geometric types like vectors, matricies, and rays.
  */
 
-#ifndef DIMENSION_GEOMETRY_H
-#define DIMENSION_GEOMETRY_H
-
 #include <math.h>
 #include <stdbool.h>
 
@@ -443,5 +440,3 @@ dmnsn_bounding_box_is_infinite(dmnsn_bounding_box box)
 {
   return box.min.x == -INFINITY;
 }
-
-#endif /* DIMENSION_GEOMETRY_H */
diff --git a/libdimension/dimension/gl.h b/libdimension/dimension/gl.h
index 4473f80..e276228 100644
--- a/libdimension/dimension/gl.h
+++ b/libdimension/dimension/gl.h
@@ -23,9 +23,6 @@
  * OpenGL export/import of canvases.
  */
 
-#ifndef DIMENSION_GL_H
-#define DIMENSION_GL_H
-
 /**
  * Optimize a canvas for GL drawing
  * @param[in,out] canvas  The canvas to optimize.
@@ -50,5 +47,3 @@ int dmnsn_gl_write_canvas(const dmnsn_canvas *canvas);
  */
 dmnsn_canvas *dmnsn_gl_read_canvas(size_t x0, size_t y0,
                                    size_t width, size_t height);
-
-#endif /* DIMENSION_GL_H */
diff --git a/libdimension/dimension/inline.h b/libdimension/dimension/inline.h
index 8a83a85..e17c60e 100644
--- a/libdimension/dimension/inline.h
+++ b/libdimension/dimension/inline.h
@@ -26,9 +26,6 @@
  * translation unit when necessary.
  */
 
-#ifndef DIMENSION_INLINE_H
-#define DIMENSION_INLINE_H
-
 /**
  * @def DMNSN_INLINE
  * A portable inline specifier. Expands to the correct method of declaring
@@ -50,5 +47,3 @@
     #define DMNSN_INLINE static
   #endif
 #endif
-
-#endif /* DIMENSION_INLINE_H */
diff --git a/libdimension/dimension/interior.h b/libdimension/dimension/interior.h
index f4bbed0..88af0b9 100644
--- a/libdimension/dimension/interior.h
+++ b/libdimension/dimension/interior.h
@@ -23,9 +23,6 @@
  * Object interiors.
  */
 
-#ifndef DIMENSION_INTERIOR_H
-#define DIMENSION_INTERIOR_H
-
 /** An interior. */
 typedef struct dmnsn_interior {
   double ior; /**< Refractive index. */
@@ -50,5 +47,3 @@ dmnsn_interior *dmnsn_new_interior(void);
  * @param[in,out] interior  The interior to delete.
  */
 void dmnsn_delete_interior(dmnsn_interior *interior);
-
-#endif /* DIMENSION_INTERIOR_H */
diff --git a/libdimension/dimension/light.h b/libdimension/dimension/light.h
index 3180534..03de641 100644
--- a/libdimension/dimension/light.h
+++ b/libdimension/dimension/light.h
@@ -23,9 +23,6 @@
  * Lights.
  */
 
-#ifndef DIMENSION_LIGHT_H
-#define DIMENSION_LIGHT_H
-
 /* Forward-declar dmnsn_light */
 typedef struct dmnsn_light dmnsn_light;
 
@@ -60,5 +57,3 @@ dmnsn_light *dmnsn_new_light(void);
  * @param[in,out] light  The light to delete.
  */
 void dmnsn_delete_light(dmnsn_light *light);
-
-#endif /* DIMENSION_LIGHT_H */
diff --git a/libdimension/dimension/lights.h b/libdimension/dimension/lights.h
index 28787b2..41ffad9 100644
--- a/libdimension/dimension/lights.h
+++ b/libdimension/dimension/lights.h
@@ -23,9 +23,6 @@
  * Pre-defined light types.
  */
 
-#ifndef DIMENSION_LIGHTS_H
-#define DIMENSION_LIGHTS_H
-
 /**
  * A point light.
  * @param[in] x0     The origin of the light.
@@ -33,5 +30,3 @@
  * @return A point light.
  */
 dmnsn_light *dmnsn_new_point_light(dmnsn_vector x0, dmnsn_color color);
-
-#endif /* DIMENSION_LIGHTS_H */
diff --git a/libdimension/dimension/map.h b/libdimension/dimension/map.h
index ca30b3a..80b48b6 100644
--- a/libdimension/dimension/map.h
+++ b/libdimension/dimension/map.h
@@ -18,15 +18,11 @@
  * <http://www.gnu.org/licenses/>.                                       *
  *************************************************************************/
 
-
 /**
  * @file
  * Generic maps (backend for color_maps, pigment_maps, etc.).
  */
 
-#ifndef DIMENSION_MAP_H
-#define DIMENSION_MAP_H
-
 /** A map. */
 typedef struct dmnsn_map {
   dmnsn_free_fn *free_fn; /**< Destructor callback. */
@@ -79,5 +75,3 @@ void dmnsn_evaluate_map(const dmnsn_map *map, double n,
  * @param[in]     callback  The callback to apply to the elements.
  */
 void dmnsn_map_apply(dmnsn_map *map, dmnsn_callback_fn *callback);
-
-#endif /* DIMENSION_MAP_H */
diff --git a/libdimension/dimension/object.h b/libdimension/dimension/object.h
index 46ff8f7..ea8a6a8 100644
--- a/libdimension/dimension/object.h
+++ b/libdimension/dimension/object.h
@@ -23,9 +23,6 @@
  * Objects.
  */
 
-#ifndef DIMENSION_OBJECT_H
-#define DIMENSION_OBJECT_H
-
 #include <stdbool.h>
 
 /** A type to represent a ray-object intersection. */
@@ -167,5 +164,3 @@ dmnsn_object_inside(const dmnsn_object *object, dmnsn_vector point)
   point = dmnsn_transform_vector(object->trans_inv, point);
   return object->inside_fn(object, point);
 }
-
-#endif /* DIMENSION_OBJECT_H */
diff --git a/libdimension/dimension/objects.h b/libdimension/dimension/objects.h
index b115030..aa53329 100644
--- a/libdimension/dimension/objects.h
+++ b/libdimension/dimension/objects.h
@@ -23,9 +23,6 @@
  * Pre-defined objects.
  */
 
-#ifndef DIMENSION_OBJECTS_H
-#define DIMENSION_OBJECTS_H
-
 #include <stdbool.h>
 
 /**
@@ -63,5 +60,3 @@ dmnsn_object *dmnsn_new_cone(double r1, double r2, bool open);
  * @return A torus, centered at the origin and lying in the x-z plane.
  */
 dmnsn_object *dmnsn_new_torus(double major, double minor);
-
-#endif /* DIMENSION_OBJECTS_H */
diff --git a/libdimension/dimension/pattern.h b/libdimension/dimension/pattern.h
index f0ffa17..beeb9f7 100644
--- a/libdimension/dimension/pattern.h
+++ b/libdimension/dimension/pattern.h
@@ -24,9 +24,6 @@
  * used for pigments and normals.
  */
 
-#ifndef DIMENSION_PATTERN_H
-#define DIMENSION_PATTERN_H
-
 /* Forward-declare dmnsn_pattern */
 typedef struct dmnsn_pattern dmnsn_pattern;
 
@@ -77,5 +74,3 @@ void dmnsn_initialize_pattern(dmnsn_pattern *pattern);
  * @return The value of the pattern at \p v.
  */
 double dmnsn_pattern_value(const dmnsn_pattern *pattern, dmnsn_vector v);
-
-#endif /* DIMENSION_PATTERN_H */
diff --git a/libdimension/dimension/patterns.h b/libdimension/dimension/patterns.h
index 8982fc0..5506941 100644
--- a/libdimension/dimension/patterns.h
+++ b/libdimension/dimension/patterns.h
@@ -23,9 +23,6 @@
  * Pre-defined patterns.
  */
 
-#ifndef DIMENSION_PATTERNS_H
-#define DIMENSION_PATTERNS_H
-
 /**
  * A checker pattern.  The pattern is composed of tesselating unit cubes
  * alternating between 0 and 1.
@@ -40,5 +37,3 @@ dmnsn_pattern *dmnsn_new_checker_pattern(void);
  * @return A gradient pattern.
  */
 dmnsn_pattern *dmnsn_new_gradient_pattern(dmnsn_vector orientation);
-
-#endif /* DIMENSION_PATTERNS_H */
diff --git a/libdimension/dimension/pigment.h b/libdimension/dimension/pigment.h
index ef8ad8b..896c0bc 100644
--- a/libdimension/dimension/pigment.h
+++ b/libdimension/dimension/pigment.h
@@ -23,9 +23,6 @@
  * Object pigments.
  */
 
-#ifndef DIMENSION_PIGMENT_H
-#define DIMENSION_PIGMENT_H
-
 /* Forward-declare dmnsn_pigment */
 typedef struct dmnsn_pigment dmnsn_pigment;
 
@@ -79,5 +76,3 @@ void dmnsn_delete_pigment(dmnsn_pigment *pigment);
  * @param[in,out] pigment  The pigment to initialize.
  */
 void dmnsn_initialize_pigment(dmnsn_pigment *pigment);
-
-#endif /* DIMENSION_PIGMENT_H */
diff --git a/libdimension/dimension/pigments.h b/libdimension/dimension/pigments.h
index d554fde..26b75f8 100644
--- a/libdimension/dimension/pigments.h
+++ b/libdimension/dimension/pigments.h
@@ -23,9 +23,6 @@
  * Pre-defined pigments.
  */
 
-#ifndef DIMENSION_PIGMENTS_H
-#define DIMENSION_PIGMENTS_H
-
 /**
  * A solid color.
  * @param[in] color  The color of the pigment.
@@ -70,5 +67,3 @@ dmnsn_map *dmnsn_new_pigment_map(void);
  */
 dmnsn_pigment *dmnsn_new_pigment_map_pigment(dmnsn_pattern *pattern,
                                              dmnsn_map *map);
-
-#endif /* DIMENSION_PIGMENTS_H */
diff --git a/libdimension/dimension/png.h b/libdimension/dimension/png.h
index 5ef42a3..12782e9 100644
--- a/libdimension/dimension/png.h
+++ b/libdimension/dimension/png.h
@@ -23,9 +23,6 @@
  * PNG import/export of canvases
  */
 
-#ifndef DIMENSION_PNG_H
-#define DIMENSION_PNG_H
-
 #include <stdio.h>
 
 /**
@@ -69,5 +66,3 @@ dmnsn_canvas *dmnsn_png_read_canvas(FILE *file);
  * @return A \ref dmnsn_progress object, or NULL on failure.
  */
 dmnsn_progress *dmnsn_png_read_canvas_async(dmnsn_canvas **canvas, FILE *file);
-
-#endif /* DIMENSION_PNG_H */
diff --git a/libdimension/dimension/polynomial.h b/libdimension/dimension/polynomial.h
index 6c5ff8e..7e53566 100644
--- a/libdimension/dimension/polynomial.h
+++ b/libdimension/dimension/polynomial.h
@@ -25,9 +25,6 @@
  * coefficient on x^i.  In general, we are only interested in positive roots.
  */
 
-#ifndef DIMENSION_POLYNOMIAL_H
-#define DIMENSION_POLYNOMIAL_H
-
 #include <stddef.h>
 #include <stdio.h>
 
@@ -86,5 +83,3 @@ size_t dmnsn_solve_polynomial(const double poly[], size_t degree, double x[]);
  * @param[in]     degree  The degree of the polynomial.
  */
 void dmnsn_print_polynomial(FILE *file, const double poly[], size_t degree);
-
-#endif /* DIMENSION_POLYNOMIAL_H */
diff --git a/libdimension/dimension/progress.h b/libdimension/dimension/progress.h
index f3b888e..ff5fccd 100644
--- a/libdimension/dimension/progress.h
+++ b/libdimension/dimension/progress.h
@@ -26,9 +26,6 @@
  * is returned as an int from dmnsn_finish_progress().
  */
 
-#ifndef DIMENSION_PROGRESS_H
-#define DIMENSION_PROGRESS_H
-
 /** A progress object. */
 typedef struct dmnsn_progress dmnsn_progress;
 
@@ -54,5 +51,3 @@ double dmnsn_get_progress(const dmnsn_progress *progress);
  * @param[in] prog      The progress value to wait for.
  */
 void dmnsn_wait_progress(const dmnsn_progress *progress, double prog);
-
-#endif /* DIMENSION_PROGRESS_H */
diff --git a/libdimension/dimension/raytrace.h b/libdimension/dimension/raytrace.h
index 7c3c474..5cd803e 100644
--- a/libdimension/dimension/raytrace.h
+++ b/libdimension/dimension/raytrace.h
@@ -23,9 +23,6 @@
  * Ray-trace a scene.
  */
 
-#ifndef DIMENSION_RAYTRACE_H
-#define DIMENSION_RAYTRACE_H
-
 /**
  * Render a scene by raytracing.
  * @param[in,out] scene  The scene to render.
@@ -38,5 +35,3 @@ void dmnsn_raytrace_scene(dmnsn_scene *scene);
  * @return A \p dmnsn_progress object.
  */
 dmnsn_progress *dmnsn_raytrace_scene_async(dmnsn_scene *scene);
-
-#endif /* DIMENSION_RAYTRACE_H */
diff --git a/libdimension/dimension/scene.h b/libdimension/dimension/scene.h
index 7b44231..2d9840b 100644
--- a/libdimension/dimension/scene.h
+++ b/libdimension/dimension/scene.h
@@ -23,9 +23,6 @@
  * Entire scenes.
  */
 
-#ifndef DIMENSION_SCENE_H
-#define DIMENSION_SCENE_H
-
 /** Render quality flags. */
 enum {
   DMNSN_RENDER_NONE         = 0,      /**< Render nothing. */
@@ -94,5 +91,3 @@ void dmnsn_delete_scene(dmnsn_scene *scene);
  * @param[in,out] scene  The scene to initalize.
  */
 void dmnsn_initialize_scene(dmnsn_scene *scene);
-
-#endif /* DIMENSION_SCENE_H */
diff --git a/libdimension/dimension/sky_sphere.h b/libdimension/dimension/sky_sphere.h
index 3a17261..43ad57e 100644
--- a/libdimension/dimension/sky_sphere.h
+++ b/libdimension/dimension/sky_sphere.h
@@ -23,9 +23,6 @@
  * Sky spheres.
  */
 
-#ifndef DIMENSION_SKY_SPHERE_H
-#define DIMENSION_SKY_SPHERE_H
-
 /** A sky sphere. */
 typedef struct dmnsn_sky_sphere {
   /** An array of pigments in inside-to-outside order. */
@@ -59,5 +56,3 @@ void dmnsn_initialize_sky_sphere(dmnsn_sky_sphere *sky_sphere);
  */
 dmnsn_color dmnsn_sky_sphere_color(const dmnsn_sky_sphere *sky_sphere,
                                    dmnsn_vector d);
-
-#endif /* DIMENSION_SKY_SPHERE_H */
diff --git a/libdimension/dimension/texture.h b/libdimension/dimension/texture.h
index 2ecf461..31ab86b 100644
--- a/libdimension/dimension/texture.h
+++ b/libdimension/dimension/texture.h
@@ -23,9 +23,6 @@
  * Object textures.
  */
 
-#ifndef DIMENSION_TEXTURE_H
-#define DIMENSION_TEXTURE_H
-
 /** A complete texture. */
 typedef struct {
   dmnsn_pigment *pigment; /**< Pigment. */
@@ -57,5 +54,3 @@ void dmnsn_delete_texture(dmnsn_texture *texture);
  * @param[in,out] texture  The texture to initialize.
  */
 void dmnsn_initialize_texture(dmnsn_texture *texture);
-
-#endif /* DIMENSION_TEXTURE_H */
diff --git a/libdimension/platform.h b/libdimension/platform.h
index 95f8fed..dc389f0 100644
--- a/libdimension/platform.h
+++ b/libdimension/platform.h
@@ -23,9 +23,6 @@
  * Platform abstractions.
  */
 
-#ifndef DIMENSION_IMPL_PLATFORM_H
-#define DIMENSION_IMPL_PLATFORM_H
-
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -61,5 +58,3 @@ DMNSN_INTERNAL size_t dmnsn_ncpus(void);
  *                    times.
  */
 DMNSN_INTERNAL void dmnsn_get_times(dmnsn_timer *timer);
-
-#endif /* DIMENSION_IMPL_PLATFORM_H */
diff --git a/libdimension/profile.h b/libdimension/profile.h
index f7359a3..4817482 100644
--- a/libdimension/profile.h
+++ b/libdimension/profile.h
@@ -23,9 +23,6 @@
  * Built-in branch profiler.
  */
 
-#ifndef DIMENSION_IMPL_PROFILE_H
-#define DIMENSION_IMPL_PROFILE_H
-
 #include <stdbool.h>
 
 /**
@@ -40,5 +37,3 @@
  */
 DMNSN_INTERNAL bool dmnsn_expect(bool result, bool expected, const char *func,
                                  const char *file, unsigned int line);
-
-#endif /* DIMENSION_IMPL_PROFILE_H */
diff --git a/libdimension/progress-impl.h b/libdimension/progress-impl.h
index 1ca9b25..973c161 100644
--- a/libdimension/progress-impl.h
+++ b/libdimension/progress-impl.h
@@ -23,9 +23,6 @@
  * Progress object implementation.
  */
 
-#ifndef DIMENSION_IMPL_PROGRESS_H
-#define DIMENSION_IMPL_PROGRESS_H
-
 #include <pthread.h>
 
 /** Allocate a new progress object. */
@@ -57,5 +54,3 @@ struct dmnsn_progress {
   volatile double min_wait;
   volatile double *min_waitp; /* Hack for const values */
 };
-
-#endif /* DIMENSION_IMPL_PROGRESS_H */
diff --git a/libdimension/prtree.h b/libdimension/prtree.h
index 26d6c1e..e799675 100644
--- a/libdimension/prtree.h
+++ b/libdimension/prtree.h
@@ -26,9 +26,6 @@
  * from B-trees.
  */
 
-#ifndef DIMENSION_IMPL_PRTREE_H
-#define DIMENSION_IMPL_PRTREE_H
-
 #include <stdbool.h>
 
 /** A priority R-tree; the spatial subdivision method used for intersection
@@ -50,5 +47,3 @@ bool dmnsn_prtree_intersection(const dmnsn_prtree *tree, dmnsn_line ray,
                                dmnsn_intersection *intersection, bool reset);
 /** Determine whether a point is inside any object in the tree. */
 bool dmnsn_prtree_inside(const dmnsn_prtree *tree, dmnsn_vector point);
-
-#endif /* DIMENSION_IMPL_PRTREE_H */
diff --git a/libdimension/threads.h b/libdimension/threads.h
index af6d641..8e88e7c 100644
--- a/libdimension/threads.h
+++ b/libdimension/threads.h
@@ -23,9 +23,6 @@
  * Background threading interface.
  */
 
-#ifndef DIMENSION_IMPL_THREADS_H
-#define DIMENSION_IMPL_THREADS_H
-
 /**
  * Thread callback type.
  * @param[in,out] ptr  An arbitrary pointer.
@@ -61,5 +58,3 @@ DMNSN_INTERNAL void dmnsn_new_thread(dmnsn_progress *progress,
  */
 DMNSN_INTERNAL int dmnsn_execute_concurrently(dmnsn_ccthread_fn *ccthread_fn,
                                               void *arg, unsigned int nthreads);
-
-#endif /* DIMENSION_IMPL_THREADS_H */