X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=moebius2.git;a=blobdiff_plain;f=common.h;h=ebc34d17a27eb3d578f7f60ca33bd2e9057ad6c4;hp=d6d1e58c8fc768f32550fae2a82d664e208213e5;hb=62f97dcbc53754ef8a81add86946e54825c4c096;hpb=4e53c82487592a5a490e3ac6daaae979e9812338

diff --git a/common.h b/common.h
index d6d1e58..ebc34d1 100644
--- a/common.h
+++ b/common.h
@@ -16,6 +16,13 @@
 #include <stdlib.h>
 #include <assert.h>
 #include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <gsl/gsl_vector.h>
+#include <gsl/gsl_matrix.h>
+#include <gsl/gsl_blas.h>
+#include <gsl/gsl_linalg.h>
 
 #define D3 3
 
@@ -29,11 +36,23 @@ void xprod(double r[D3], const double a[D3], const double b[D3]);
 void flushoutput(void);
 void diee(const char *what);
 
+void libdie(const char *lib, int l, const char *str);
+#define XA(w) ((w) ? (void)0 : libdie("X", __LINE__, #w))
+
+void gsldie(int l, const char *what, int status);
+#define GA(w) ({int _ga_r= (w); if (w) gsldie(__LINE__,#w,_ga_r);})
+
 #define FOR_COORD(k) \
   for ((k)=0; (k)<D3; (k)++)
 
 #define K FOR_COORD(k)
 
+#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