X-Git-Url: http://mmka.chem.univ.gda.pl/gitweb/?a=blobdiff_plain;f=source%2Funres%2Fsrc_Eshel%2Farcos.f;fp=source%2Funres%2Fsrc_Eshel%2Farcos.f;h=f054118a1022be3f84f9a3a80bc64c15caebfbc7;hb=d101c97dea752458d76055fdbae49c26fff03c1f;hp=0000000000000000000000000000000000000000;hpb=325eda160c9ad2982501e091ca40606a29043712;p=unres.git

diff --git a/source/unres/src_Eshel/arcos.f b/source/unres/src_Eshel/arcos.f
new file mode 100644
index 0000000..f054118
--- /dev/null
+++ b/source/unres/src_Eshel/arcos.f
@@ -0,0 +1,9 @@
+      FUNCTION ARCOS(X)
+      implicit real*8 (a-h,o-z)
+      include 'COMMON.GEO'
+      IF (DABS(X).LT.1.0D0) GOTO 1
+      ARCOS=PIPOL*(1.0d0-DSIGN(1.0D0,X))
+      RETURN
+    1 ARCOS=DACOS(X)
+      RETURN
+      END