fix(misc): correct the comment and coding style (#2096)

Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>

src/lv_draw/lv_img_decoder.c

@@ -133,7 +133,7 @@ lv_res_t lv_img_decoder_open(lv_img_decoder_dsc_t * dsc, const void * src, lv_co
 
     lv_img_decoder_t * d;
     _LV_LL_READ(&LV_GC_ROOT(_lv_img_decoder_ll), d) {
-        /*Info an Open callbacks are required*/
+        /*Info and Open callbacks are required*/
         if(d->info_cb == NULL || d->open_cb == NULL) continue;
 
         res = d->info_cb(d, src, &dsc->header);

src/lv_misc/lv_anim.c

@@ -14,6 +14,7 @@
 #include "../lv_hal/lv_hal_tick.h"
 #include "lv_timer.h"
 #include "lv_math.h"
+#include "lv_mem.h"
 #include "lv_gc.h"
 
 /*********************
@@ -93,6 +94,7 @@ void lv_anim_start(lv_anim_t * a)
 {
     TRACE_ANIM("begin");
     /* Do not let two animations for the same 'var' with the same 'fp'*/
+
     if(a->exec_cb != NULL) lv_anim_del(a->var, a->exec_cb); /*fp == NULL would delete all animations of var*/
 
     /*If the list is empty the anim task was suspended and it's last run measure is invalid*/

src/lv_misc/lv_anim.h

@@ -15,7 +15,6 @@ extern "C" {
  *********************/
 #include "../lv_conf_internal.h"
 
-#include "lv_area.h"
 #include <stdint.h>
 #include <stdbool.h>
 #include <string.h>
@@ -431,7 +430,6 @@ extern const lv_anim_path_t lv_anim_path_def;
  *      MACROS
  **********************/
 
-
 #ifdef __cplusplus
 } /* extern "C" */
 #endif

src/lv_misc/lv_assert.h

@@ -41,7 +41,6 @@ extern "C" {
         }                            \
     } while(0)
 
-
 #define LV_ASSERT_MSG(expr, msg)                     \
     do {                                             \
         if(!(expr)) {                                \
@@ -50,8 +49,6 @@ extern "C" {
         }                                            \
     } while(0)
 
-
-
 /*-----------------
  * ASSERTS
  *-----------------*/

src/lv_misc/lv_color.h

@@ -200,7 +200,6 @@ enum {
 #define _LV_COLOR_ZERO_INITIALIZER LV_CONCAT(_LV_COLOR_ZERO_INITIALIZER, LV_COLOR_DEPTH)
 #define LV_COLOR_MAKE(r8, g8, b8) LV_CONCAT(LV_COLOR_MAKE, LV_COLOR_DEPTH)(r8, g8, b8)
 
-
 #define LV_UDIV255(x) ((uint32_t)((uint32_t) (x) * 0x8081) >> 0x17)
 
 /**********************

src/lv_misc/lv_ll.c

@@ -272,6 +272,7 @@ void * _lv_ll_get_tail(const lv_ll_t * ll_p)
     if(ll_p == NULL) return NULL;
     return ll_p->tail;
 }
+
 /**
  * Return with the pointer of the next node after 'n_act'
  * @param ll_p pointer to linked list

src/lv_misc/lv_ll.h

@@ -156,7 +156,7 @@ bool _lv_ll_is_empty(lv_ll_t * ll_p);
  *      MACROS
  **********************/
 
-#define _LV_LL_READ(list, i) for((i) = _lv_ll_get_head(list); i != NULL; (i) = _lv_ll_get_next(list, i))
+#define _LV_LL_READ(list, i) for(i = _lv_ll_get_head(list); i != NULL; i = _lv_ll_get_next(list, i))
 
 #define _LV_LL_READ_BACK(list, i) for(i = _lv_ll_get_tail(list); i != NULL; i = _lv_ll_get_prev(list, i))
 

src/lv_misc/lv_math.c

@@ -242,9 +242,9 @@ int32_t lv_map(int32_t x, int32_t min_in, int32_t max_in, int32_t min_out, int32
     if(x <= min_in) return min_out;
 
     /* The equation should be:
-     *   ((x - min_in) * (delta_out / delta_min)) + min_out
+     *   ((x - min_in) * delta_out) / delta in) + min_out
      * To avoid rounding error reorder the operations:
-     *   (((x - min_in) * delta_out) / delta in) + min_out
+     *   (x - min_in) * (delta_out / delta_min) + min_out
      */
 
     int32_t delta_in = max_in - min_in;

src/lv_misc/lv_math.h

@@ -3,8 +3,8 @@
  *
  */
 
-#ifndef LV_H
-#define LV_H
+#ifndef LV_MATH_H
+#define LV_MATH_H
 
 #ifdef __cplusplus
 extern "C" {
@@ -46,7 +46,6 @@ typedef struct {
  */
 LV_ATTRIBUTE_FAST_MEM int16_t lv_trigo_sin(int16_t angle);
 
-
 static inline LV_ATTRIBUTE_FAST_MEM int16_t lv_trigo_cos(int16_t angle)
 {
     return lv_trigo_sin(angle + 90);
@@ -115,6 +114,7 @@ int32_t lv_map(int32_t x, int32_t min_in, int32_t max_in, int32_t min, int32_t m
  * @return return the random number. min <= return_value <= max
  */
 uint32_t lv_rand(uint32_t min, uint32_t max);
+
 /**********************
  *      MACROS
  **********************/
@@ -135,7 +135,6 @@ uint32_t lv_rand(uint32_t min, uint32_t max);
 #define LV_SMAX_OF(t) (((0x1ULL << ((sizeof(t) * 8ULL) - 1ULL)) - 1ULL) | (0x7ULL << ((sizeof(t) * 8ULL) - 4ULL)))
 #define LV_MAX_OF(t) ((unsigned long) (LV_IS_SIGNED(t) ? LV_SMAX_OF(t) : LV_UMAX_OF(t)))
 
-
 #ifdef __cplusplus
 } /* extern "C" */
 #endif