From 407ae3972ac7c6e8d2e14bb876b2998691684c43 Mon Sep 17 00:00:00 2001
From: GPUCode <geoster3d@gmail.com>
Date: Thu, 3 Nov 2022 14:01:24 +0200
Subject: [PATCH] Revert "code: Use std::numbers::pi"

* Not available on Android

This reverts commit d6e545932a56a40461123de673356857e7fbf9ed.
---
 src/common/math_util.h            | 2 ++
 src/input_common/motion_emu.cpp   | 4 ++--
 src/input_common/sdl/sdl_impl.cpp | 8 +++++---
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/src/common/math_util.h b/src/common/math_util.h
index c42f45fe5..dbae4f05d 100644
--- a/src/common/math_util.h
+++ b/src/common/math_util.h
@@ -10,6 +10,8 @@
 
 namespace Common {
 
+constexpr float PI = 3.14159265f;
+
 template <class T>
 struct Rectangle {
     T left{};
diff --git a/src/input_common/motion_emu.cpp b/src/input_common/motion_emu.cpp
index 431c8712b..50964f86a 100644
--- a/src/input_common/motion_emu.cpp
+++ b/src/input_common/motion_emu.cpp
@@ -47,7 +47,7 @@ public:
             } else {
                 tilt_direction = mouse_move.Cast<float>();
                 tilt_angle = std::clamp(tilt_direction.Normalize() * sensitivity, 0.0f,
-                                        std::numbers::pi_v<float> * this->tilt_clamp / 180.0f);
+                                        Common::PI * this->tilt_clamp / 180.0f);
             }
         }
     }
@@ -110,7 +110,7 @@ private:
 
             // Find the angular rate vector in world space
             auto angular_rate = ((q - old_q) * inv_q).xyz * 2;
-            angular_rate *= 1000 / update_millisecond / std::numbers::pi_v<float> * 180;
+            angular_rate *= 1000 / update_millisecond / Common::PI * 180;
 
             // Transform the two vectors from world space to 3DS space
             gravity = QuaternionRotate(inv_q, gravity);
diff --git a/src/input_common/sdl/sdl_impl.cpp b/src/input_common/sdl/sdl_impl.cpp
index 626e56bc6..ec73bd871 100644
--- a/src/input_common/sdl/sdl_impl.cpp
+++ b/src/input_common/sdl/sdl_impl.cpp
@@ -16,6 +16,8 @@
 #include <utility>
 #include <vector>
 #include <SDL.h>
+#include "common/assert.h"
+#include "common/math_util.h"
 #include "common/logging/log.h"
 #include "common/param_package.h"
 #include "common/threadsafe_queue.h"
@@ -596,9 +598,9 @@ void SDLState::HandleGameControllerEvent(const SDL_Event& event) {
                                    event.csensor.data[2] / SDL_STANDARD_GRAVITY);
                 break;
             case SDL_SENSOR_GYRO:
-                joystick->SetGyro(-event.csensor.data[0] * (180.0f / std::numbers::pi),
-                                  event.csensor.data[1] * (180.0f / std::numbers::pi),
-                                  -event.csensor.data[2] * (180.0f / std::numbers::pi));
+                joystick->SetGyro(-event.csensor.data[0] * (180.0f / Common::PI),
+                                  event.csensor.data[1] * (180.0f / Common::PI),
+                                  -event.csensor.data[2] * (180.0f / Common::PI));
                 break;
             }
         }