RSSI转换为百分比

guint32
nm_ap_utils_level_to_quality (gint val)
{
if (val < 0) {
/* Assume dBm already; rough conversion: best = -40, worst = -100 /
val = abs (CLAMP (val, -100, -40) + 40); / normalize to 0 /
val = 100 - (int) ((100.0 * (double) val) / 60.0);
} else if (val > 110 && val < 256) {
/ assume old-style WEXT 8-bit unsigned signal level /
val -= 256; / subtract 256 to convert to dBm /
val = abs (CLAMP (val, -100, -40) + 40); / normalize to 0 */
val = 100 - (int) ((100.0 * (double) val) / 60.0);
} else {
val = CLAMP (val, 0, 100);
}
g_assert (val >= 0);

return (guint32) val;

}

标签：CLAMP,百分比,转换,val,int,40,RSSI,100,256
来源： https://www.cnblogs.com/sudochen/p/15931764.html