X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=moebius2.git;a=blobdiff_plain;f=common.h;h=7e0e86d7622da0698d992bdf94af0dfef3e4676e;hp=88ec865226297a1bcced0312bdd8c91a40febf82;hb=a602fc812857788265c72c27b132f34b9d7d107c;hpb=76f84179ceee1307c87a665a924abaeae8cb9f18

diff --git a/common.h b/common.h
index 88ec865..7e0e86d 100644
--- a/common.h
+++ b/common.h
@@ -17,6 +17,7 @@
 #include <assert.h>
 #include <errno.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <gsl/gsl_vector.h>
 #include <gsl/gsl_matrix.h>
@@ -31,6 +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);
@@ -49,6 +51,9 @@ void gsldie(int l, const char *what, int status);
 #define GSL_VECTOR(x) gsl_vector x##_gsl= { D3,1,&x[0] };
 #define GSL_MATRIX(x) gsl_matrix x##_gsl= { D3,D3,D3,&x[0][0] };
 
+#define MIN(a,b) ((a) <= (b) ? (a) : (b))
+#define MAX(a,b) ((a) >= (b) ? (a) : (b))
+
 #ifdef FP_FAST_FMA
 # define fma_fast fma
 #else