Separation and small optimization. v0.7.1.0

src/KKdLib/time.cpp

@@ -0,0 +1,33 @@
+/*
+    by korenkonder
+    GitHub/GitLab: korenkonder
+*/
+
+#include "time.hpp"
+
+static double_t time_struct_get_freq();
+
+time_struct::time_struct() : timestamp() {
+    get_timestamp();
+    inv_freq = time_struct_get_freq();
+}
+
+double_t time_struct::calc_time() {
+    LARGE_INTEGER timestamp;
+    if (!QueryPerformanceCounter(&timestamp))
+        return 0;
+
+    return (double_t)(timestamp.QuadPart - this->timestamp.QuadPart) * inv_freq;
+}
+
+void time_struct::get_timestamp() {
+    if (!QueryPerformanceCounter(&timestamp))
+        timestamp.QuadPart = 0;
+}
+
+static double_t time_struct_get_freq() {
+    LARGE_INTEGER freq;
+    if (QueryPerformanceFrequency(&freq))
+        return 1000.0 / (double_t)freq.LowPart;
+    return 0.0;
+}