The Weird and The Wonderful

float mpu6886::inv_sqrt(float x) {
    float halfx = 0.5f * x;
    float y     = x;
// required, or "y is unintialized":
#pragma GCC diagnostic ignored "-Wuninitialized"
#pragma GCC diagnostic ignored "-Wstrict-aliasing"
    long i = *(long *)&y;
    i      = 0x5f3759df - (i >> 1);
    y      = *(float *)&i;
#pragma GCC diagnostic warning "-Wuninitialized"
#pragma GCC diagnostic warning "-Wstrict-aliasing"
    y = y * (1.5f - (halfx * y * y));
    return y;
}

//first notice that I'm appending two items to the formData.
// 1. string uuid
// 2. journalEntry object with numerous values

var formData = new FormData();
formData.append("uuid",currentUuid);

var entryId = 9;
var jentry = {
        Id:entryId,
        Title: titleText,
        Note: noteText,
        Created: createdDate,
        Updated: null
    };

// You have to do this weird thing to add the data to FormData.

 for (var key in jentry) {
        formData.append(key, jentry[key]);
   }

public ActionResult Save([FromForm] String uuid,[FromForm] JournalEntry jentry)

public class JournalEntry{
    public Int64 Id{get;set;}
    public String? Title{get;set;}
    public String Note{get;set;}
    public String Created{get;set;}
    public String? Updated{get;set;}
}

public class JournalEntry{
    public String Id{get;set;}
   // ....snip....

evoid lcd_flush_display( lv_display_t *disp, const lv_area_t *area, uint8_t * px_map) {
    size_t count = (area->x2-area->x1+1)*(area->y2-area->y1+1);
    for(int i = 0;i<count;++i) {
        uint16_t* p = &((uint16_t*)px_map)[i];
        *p = ((*p<<8)&0xFF00)|((*p>>8)&0xFF);
    }
    esp_lcd_panel_draw_bitmap(lcd_handle,area->x1,area->y1,area->x2+1,area->y2+1,px_map);
    LV_UNUSED(disp);
}