I forgot a linker dependency. It really si time to figure out why these are all needed.

[flightgear.git] / src / FDM / LaRCsim / c172_main.c

diff --git a/src/FDM/LaRCsim/c172_main.c b/src/FDM/LaRCsim/c172_main.c
index 67e3944b5e561972193c73630185d7521241df78..1305f2eeaa15e3ac3ba4d23eb3b9722390ebfa54 100644 (file)
--- a/src/FDM/LaRCsim/c172_main.c
+++ b/src/FDM/LaRCsim/c172_main.c
@@ -262,7 +262,7 @@ int wave_stats(float *var,float *var_rate,int N,FILE *out)
        if(Nmaxima > 2)
        {
          ld=log(varmaxima[1]/varmaxima[2]);   //logarithmic decrement
-         zeta=ld/sqrt(4*PI*PI +ld*ld);        //damping ratio
+         zeta=ld/sqrt(4*LS_PI*LS_PI +ld*ld);        //damping ratio
          omegad=1/(vm_times[2]-vm_times[1]);  //damped natural frequency Hz
          if(zeta < 1)
          {