X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=moebius2.git;a=blobdiff_plain;f=common.h;h=7e0e86d7622da0698d992bdf94af0dfef3e4676e;hp=ebc34d17a27eb3d578f7f60ca33bd2e9057ad6c4;hb=f1dc8f4f3623b15deddba8db85d181a0e1011c9e;hpb=38a973f8180c4711993d8c28fcccb2e8a9aea065

diff --git a/common.h b/common.h
index ebc34d1..7e0e86d 100644
--- a/common.h
+++ b/common.h
@@ -32,6 +32,7 @@ double hypotD2plus(const double p[D3], const double q[D3], double add);
 
 double magnD(const double pq[D3]);
 void xprod(double r[D3], const double a[D3], const double b[D3]);
+double dotprod(const double a[D3], const double b[D3]);
 
 void flushoutput(void);
 void diee(const char *what);