From a5b71554a23cf93a223b82eebc9cda0c383a6db2 Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Sat, 19 Jul 1997 22:35:06 +0000
Subject: [PATCH] Moved fiddled with PI to avoid compiler warnings.

---
 LaRCsim/ls_constants.h |  3 +++
 Slew/depend            |  3 ++-
 Slew/slew.c            | 14 +++++++++-----
 3 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/LaRCsim/ls_constants.h b/LaRCsim/ls_constants.h
index 3e90aab58..bdd123d86 100644
--- a/LaRCsim/ls_constants.h
+++ b/LaRCsim/ls_constants.h
@@ -80,6 +80,9 @@
 	systems of measure)	*/
 
 /* Value of Pi from ref [3] */
+#ifdef PI
+#  undef PI /* avoid a harmless compiler warning */
+#endif
 #define	PI 3.14159265358979323846264338327950288419716939967511
 
 /* Value of earth radius from [8], ft */
diff --git a/Slew/depend b/Slew/depend
index 9df003d84..77fd35e4e 100644
--- a/Slew/depend
+++ b/Slew/depend
@@ -2,4 +2,5 @@ slew.o: slew.c slew.h ../flight.h ../Slew/slew.h \
  ../LaRCsim/ls_interface.h ../LaRCsim/../flight.h \
  ../../Aircraft/aircraft.h ../../Aircraft/../Flight/flight.h \
  ../../Aircraft/../Controls/controls.h \
- ../../Aircraft/../Controls/../limits.h ../../Controls/controls.h
+ ../../Aircraft/../Controls/../limits.h ../../Controls/controls.h \
+ ../../constants.h
diff --git a/Slew/slew.c b/Slew/slew.c
index db258e811..f8029e01b 100644
--- a/Slew/slew.c
+++ b/Slew/slew.c
@@ -30,6 +30,7 @@
 #include "../flight.h"
 #include "../../Aircraft/aircraft.h"
 #include "../../Controls/controls.h"
+#include "../../constants.h"
 
 
 #ifndef M_PI                                    
@@ -76,10 +77,10 @@ void fgSlewUpdate() {
     c = &current_aircraft.controls;
 
     /* f->Psi += ( c->aileron / 8 );
-    if ( f->Psi > PI2 ) {
-	f->Psi -= PI2;
+    if ( f->Psi > FG_2PI ) {
+	f->Psi -= FG_2PI;
     } else if ( f->Psi < 0 ) {
-	f->Psi += PI2;
+	f->Psi += FG_2PI;
     }
 
     f->vel_x = -c->elev;
@@ -90,9 +91,12 @@ void fgSlewUpdate() {
 
 
 /* $Log$
-/* Revision 1.4  1997/06/21 17:12:51  curt
-/* Capitalized subdirectory names.
+/* Revision 1.5  1997/07/19 22:35:06  curt
+/* Moved fiddled with PI to avoid compiler warnings.
 /*
+ * Revision 1.4  1997/06/21 17:12:51  curt
+ * Capitalized subdirectory names.
+ *
  * Revision 1.3  1997/05/29 22:40:00  curt
  * Working on incorporating the LaRCsim flight model.
  *
-- 
2.39.2