PJ_lask.c
783 Bytes
#ifndef lint
static const char SCCSID[]="@(#)PJ_lask.c 4.1 94/02/15 GIE REL";
#endif
#define PROJ_PARMS__
#define PJ_LIB__
#include "projects.h"
PROJ_HEAD(lask, "Laskowski") "\n\tMisc Sph, no inv.";
#define a10 0.975534
#define a12 -0.119161
#define a32 -0.0143059
#define a14 -0.0547009
#define b01 1.00384
#define b21 0.0802894
#define b03 0.0998909
#define b41 0.000199025
#define b23 -0.0285500
#define b05 -0.0491032
FORWARD(s_forward); /* sphere */
double l2, p2;
l2 = lp.lam * lp.lam;
p2 = lp.phi * lp.phi;
xy.x = lp.lam * (a10 + p2 * (a12 + l2 * a32 + p2 * a14));
xy.y = lp.phi * (b01 + l2 * (b21 + p2 * b23 + l2 * b41) +
p2 * (b03 + p2 * b05));
return (xy);
}
FREEUP; if (P) pj_dalloc(P); }
ENTRY0(lask) P->fwd = s_forward; P->inv = 0; P->es = 0.; ENDENTRY(P)