2 * Generally useful stuff.
21 #include <gsl/gsl_vector.h>
22 #include <gsl/gsl_matrix.h>
23 #include <gsl/gsl_blas.h>
24 #include <gsl/gsl_linalg.h>
28 double hypotD(const double p[D3], const double q[D3]);
29 double hypotD2(const double p[D3], const double q[D3]);
30 double hypotD2plus(const double p[D3], const double q[D3], double add);
32 double magnD(const double pq[D3]);
33 void xprod(double r[D3], const double a[D3], const double b[D3]);
35 void flushoutput(void);
36 void diee(const char *what);
38 void libdie(const char *lib, int l, const char *str);
39 #define XA(w) ((w) ? (void)0 : libdie("X", __LINE__, #w))
41 void gsldie(int l, const char *what, int status);
42 #define GA(w) ({int _ga_r= (w); if (w) gsldie(__LINE__,#w,_ga_r);})
44 #define FOR_COORD(k) \
45 for ((k)=0; (k)<D3; (k)++)
47 #define K FOR_COORD(k)
49 #define GSL_VECTOR(x) gsl_vector x##_gsl= { D3,1,&x[0] };
50 #define GSL_MATRIX(x) gsl_matrix x##_gsl= { D3,D3,D3,&x[0][0] };
55 # define fma_fast(f1,f2,t) ((f1)*(f2)+(t))
57 #define ffsqa(factor,term) fma_fast((factor),(factor),(term))