4 * This source code is part of
8 * GROningen MAchine for Chemical Simulations
12 * Copyright (c) 1991-1999
13 * BIOSON Research Institute, Dept. of Biophysical Chemistry
14 * University of Groningen, The Netherlands
17 * GROMACS: A message-passing parallel molecular dynamics implementation
18 * H.J.C. Berendsen, D. van der Spoel and R. van Drunen
19 * Comp. Phys. Comm. 91, 43-56 (1995)
21 * Also check out our WWW page:
22 * http://md.chem.rug.nl/~gmx
27 * Good ROcking Metal Altar for Chronical Sinners
33 static char *SRCID_maths_h = "$Id$";
40 #ident "@(#) maths.h 1.11 11/24/92"
41 #endif /* HAVE_IDENT */
47 #define M_PI 3.14159265358979323846
51 #define M_PI_2 1.57079632679489661923
55 #define M_2PI 6.28318530718
59 #define M_SQRT2 sqrt(2.0)
66 extern int gmx_nint(real a);
67 extern real sign(real x,real y);