From f0a0666223f90f8e83bea5d3595de624789f7b14 Mon Sep 17 00:00:00 2001
From: James R <justsomejames2@gmail.com>
Date: Sat, 2 Mar 2019 15:56:44 -0800
Subject: [PATCH] Use long double suffix

---
 src/doomdef.h                    | 6 +++++-
 src/hardware/hw_bsp.c            | 2 +-
 src/hardware/hw_dll.h            | 3 ---
 src/hardware/r_opengl/r_opengl.c | 2 +-
 src/r_plane.c                    | 2 +-
 5 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/src/doomdef.h b/src/doomdef.h
index ab863c6f..59b1235a 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -471,13 +471,17 @@ INT32 I_GetKey(void);
 #define max(x, y) (((x) > (y)) ? (x) : (y))
 #endif
 
+#ifndef M_PIl
+#define M_PIl 3.1415926535897932384626433832795029L
+#endif
+
 // Floating point comparison epsilons from float.h
 #ifndef FLT_EPSILON
 #define FLT_EPSILON 1.1920928955078125e-7f
 #endif
 
 #ifndef DBL_EPSILON
-#define DBL_EPSILON 2.2204460492503131e-16
+#define DBL_EPSILON 2.2204460492503131e-16l
 #endif
 
 // An assert-type mechanism.
diff --git a/src/hardware/hw_bsp.c b/src/hardware/hw_bsp.c
index 48393249..9e454bcd 100644
--- a/src/hardware/hw_bsp.c
+++ b/src/hardware/hw_bsp.c
@@ -201,7 +201,7 @@ static polyvertex_t *fracdivline(fdivline_t *bsp, polyvertex_t *v1,
 	// (do not accept hit with the extensions)
 	num = (v2x - v1x)*v2dy + (v1y - v2y)*v2dx;
 	frac = num / den;
-	if (frac < 0.0 || frac > 1.0)
+	if (frac < 0.0l || frac > 1.0l)
 		return NULL;
 
 	// now get the frac along the BSP line
diff --git a/src/hardware/hw_dll.h b/src/hardware/hw_dll.h
index 6b9f4d53..46645278 100644
--- a/src/hardware/hw_dll.h
+++ b/src/hardware/hw_dll.h
@@ -61,9 +61,6 @@ typedef void (*I_Error_t) (const char *error, ...) FUNCIERROR;
 // ==========================================================================
 
 // Constants
-#ifndef M_PIl
-#define M_PIl 3.1415926535897932384626433832795029L
-#endif
 #define DEGREE (0.017453292519943295769236907684883l) // 2*PI/360
 
 void DBG_Printf(const char *lpFmt, ...) /*FUNCPRINTF*/;
diff --git a/src/hardware/r_opengl/r_opengl.c b/src/hardware/r_opengl/r_opengl.c
index 3a8be6a0..8b3787da 100644
--- a/src/hardware/r_opengl/r_opengl.c
+++ b/src/hardware/r_opengl/r_opengl.c
@@ -2088,7 +2088,7 @@ EXPORT void HWRAPI(SetTransform) (FTransform *stransform)
 	pglLoadIdentity();
 	if (special_splitscreen)
 	{
-		used_fov = atan(tan(used_fov*M_PI/360)*0.8)*360/M_PI;
+		used_fov = atan(tan(used_fov*M_PIl/360.0l)*0.8l)*360/M_PIl;
 		GLPerspective(used_fov, 2*ASPECT_RATIO);
 	}
 	else
diff --git a/src/r_plane.c b/src/r_plane.c
index 3c1fc30e..0ff97fcc 100644
--- a/src/r_plane.c
+++ b/src/r_plane.c
@@ -1051,7 +1051,7 @@ void R_DrawSinglePlane(visplane_t *pl)
 		temp = P_GetZAt(pl->slope, pl->viewx, pl->viewy);
 		zeroheight = FIXED_TO_FLOAT(temp);
 
-#define ANG2RAD(angle) ((float)((angle)*M_PI)/ANGLE_180)
+#define ANG2RAD(angle) ((float)((angle)*M_PIl)/ANGLE_180)
 
 		// p is the texture origin in view space
 		// Don't add in the offsets at this stage, because doing so can result in