Use one float-precision PI constant

- move PI_F into hl2h.h as constexpr 3.14159265f and remove the duplicated
  long-double-style literals from hl2h.cpp/esp.cpp
- extra digits are compile-time only; float operations cost the same

3 files changed, 5 insertions, 4 deletions

diff --git a/src/esp.cpp b/src/esp.cpp
index cd0ff36..7583f26 100644
--- a/src/esp.cpp
+++ b/src/esp.cpp
@@ -6,8 +6,6 @@
 #include <cstdlib>
 #include <ctime>
 
-static constexpr float PI_F = 3.14159265358979323846f;
-
 // ISurface slots (binary = SDK header + 4, disassembly-confirmed)
 enum SurfSlot {
   SURF_DrawSetColor = 10, SURF_FilledRect = 12, SURF_OutlinedRect = 14,
diff --git a/src/hl2h.cpp b/src/hl2h.cpp
index f3aa26f..a49acc2 100644
--- a/src/hl2h.cpp
+++ b/src/hl2h.cpp
@@ -39,8 +39,6 @@ Vector g_cam_view{0, 0, 0};
 // vector math
 // ---------------------------------------------------------------------------
 
-static constexpr float PI_F = 3.14159265358979323846f;
-
 QAngle vector_angles(const Vector &forward) {
   QAngle a{};
   a.z = 0;
diff --git a/src/hl2h.h b/src/hl2h.h
index 37c849f..b86fe84 100644
--- a/src/hl2h.h
+++ b/src/hl2h.h
@@ -11,6 +11,11 @@
 #include <pthread.h>
 #include <unistd.h>
 
+// Shared float-precision constant. More digits than a float can hold are
+// rounded at compile time and have no runtime cost; a coarse value would only
+// hurt angular accuracy, never performance.
+constexpr float PI_F = 3.14159265f;
+
 // ---------------------------------------------------------------------------
 // logging
 // ---------------------------------------------------------------------------