Avoid function declarator with no prototype errors

This is for SDCC 4.4.0 at least.

3 files changed, 13 insertions, 13 deletions

diff --git a/include/mplayer.h b/include/mplayer.h
index 139dd9e..c13ac56 100644
--- a/include/mplayer.h
+++ b/include/mplayer.h
@@ -92,14 +92,14 @@ void mplayer_init_effects(const uint8_t *effects) __z88dk_fastcall;
  * If the player is stopped, [mplayer_stop](#mplayer_stop) must be called to
  * silence the PSG.
  */
-void mplayer_play();
+void mplayer_play(void);
 
 /**
  * Silences the PSG, stopping any sound.
  *
  * This doesn't stop the player if [mplayer_play](#mplayer_play) is called.
  */
-void mplayer_stop();
+void mplayer_stop(void);
 
 // @Sound effects
 
diff --git a/include/spman.h b/include/spman.h
index e8e27af..fa2a5c9 100644
--- a/include/spman.h
+++ b/include/spman.h
@@ -37,7 +37,7 @@
  *
  * it needs to be called before using any of the functions of the sprite manager.
  */
-void spman_init();
+void spman_init(void);
 
 /**
  * Allocates a pattern for sprite `type` using `data`.
@@ -121,7 +121,7 @@ void spman_alloc_sprite(const struct sprite_attr *sp);
  *
  * This doesn't affect sprites currently being shown on the screen.
  */
-void spman_sprite_flush();
+void spman_sprite_flush(void);
 
 // @Sprites on screen
 
@@ -136,7 +136,7 @@ void spman_sprite_flush();
  * [spman_alloc_sprite](#spman_alloc_sprite).
  *
  */
-void spman_update();
+void spman_update(void);
 
 /**
  * Hides all the sprites currently shown on screen.
@@ -144,6 +144,6 @@ void spman_update();
  * This doesn't affect any allocated sprites. To free allocated sprites use
  * [spman_sprite_flush](#spman_sprite_flush).
  */
-void spman_hide_all_sprites();
+void spman_hide_all_sprites(void);
 
 #endif //  _SPMAN_H
diff --git a/include/ubox.h b/include/ubox.h
index b045d4d..fa56741 100644
--- a/include/ubox.h
+++ b/include/ubox.h
@@ -69,7 +69,7 @@ void ubox_set_mode(uint8_t mode) __z88dk_fastcall;
 /**
  * Enables the screen.
  */
-void ubox_enable_screen();
+void ubox_enable_screen(void);
 
 /**
  * Disables the screen.
@@ -79,7 +79,7 @@ void ubox_enable_screen();
  *
  * Note that [ubox_set_mode](#ubox_set_mode) also enables the screen.
  */
-void ubox_disable_screen();
+void ubox_disable_screen(void);
 
 /**
  * Changes the screen colors.
@@ -158,7 +158,7 @@ void ubox_wvdp(uint8_t reg, uint8_t data);
  * | 0     | 60Hz      |
  * | 1     | 50Hz      |
  */
-uint8_t ubox_get_vsync_freq();
+uint8_t ubox_get_vsync_freq(void);
 
 // *INDENT-OFF*
 /**
@@ -311,7 +311,7 @@ void ubox_init_isr(uint8_t wait_ticks) __z88dk_fastcall;
  * ubox_set_user_isr(my_isr);
  * ```
  */
-void ubox_set_user_isr(void (*fn)()) __z88dk_fastcall;
+void ubox_set_user_isr(void (*fn)(void)) __z88dk_fastcall;
 
 /**
  * Waits for a maximum `wait_ticks` interrupts (see [ubox_init_isr](#ubox_init_isr)).
@@ -347,7 +347,7 @@ void ubox_set_user_isr(void (*fn)()) __z88dk_fastcall;
  * }
  * ```
  */
-void ubox_wait();
+void ubox_wait(void);
 
 /**
  * Waits for `frames` frames.
@@ -373,7 +373,7 @@ extern uint8_t ubox_tick;
  *
  * `ubox_tick` is a 8-bit global variable that is incremented on every interrupt.
  */
-void ubox_reset_tick();
+void ubox_reset_tick(void);
 
 // @Sprite functions
 //
@@ -486,7 +486,7 @@ void ubox_set_sprite_pat16_flip(const uint8_t *data, uint8_t pattern);
  *
  * See [ubox_read_ctl](#ubox_read_ctl) for possible control values.
  */
-uint8_t ubox_select_ctl();
+uint8_t ubox_select_ctl(void);
 
 /**
  * Read the control identified by `control` and return the status of it.