diff options
Diffstat (limited to 'src/nad_intr.cpp')
| -rw-r--r-- | src/nad_intr.cpp | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/src/nad_intr.cpp b/src/nad_intr.cpp deleted file mode 100644 index 36ab0a99..00000000 --- a/src/nad_intr.cpp +++ /dev/null @@ -1,67 +0,0 @@ -/* Determine nad table correction value */ -#define PJ_LIB__ -#include "proj.h" -#include "proj_internal.h" -#include <math.h> - -PJ_LP nad_intr(PJ_LP t, struct CTABLE *ct) { - PJ_LP val, frct; - ILP indx; - double m00, m10, m01, m11; - FLP *f00, *f10, *f01, *f11; - long index; - int in; - - t.lam /= ct->del.lam; - indx.lam = isnan(t.lam) ? 0 : (pj_int32)lround(floor(t.lam)); - t.phi /= ct->del.phi; - indx.phi = isnan(t.phi) ? 0 : (pj_int32)lround(floor(t.phi)); - - frct.lam = t.lam - indx.lam; - frct.phi = t.phi - indx.phi; - val.lam = val.phi = HUGE_VAL; - if (indx.lam < 0) { - if (indx.lam == -1 && frct.lam > 0.99999999999) { - ++indx.lam; - frct.lam = 0.; - } else - return val; - } else if ((in = indx.lam + 1) >= ct->lim.lam) { - if (in == ct->lim.lam && frct.lam < 1e-11) { - --indx.lam; - frct.lam = 1.; - } else - return val; - } - if (indx.phi < 0) { - if (indx.phi == -1 && frct.phi > 0.99999999999) { - ++indx.phi; - frct.phi = 0.; - } else - return val; - } else if ((in = indx.phi + 1) >= ct->lim.phi) { - if (in == ct->lim.phi && frct.phi < 1e-11) { - --indx.phi; - frct.phi = 1.; - } else - return val; - } - index = indx.phi * ct->lim.lam + indx.lam; - f00 = ct->cvs + index++; - f10 = ct->cvs + index; - index += ct->lim.lam; - f11 = ct->cvs + index--; - f01 = ct->cvs + index; - m11 = m10 = frct.lam; - m00 = m01 = 1. - frct.lam; - m11 *= frct.phi; - m01 *= frct.phi; - frct.phi = 1. - frct.phi; - m00 *= frct.phi; - m10 *= frct.phi; - val.lam = m00 * f00->lam + m10 * f10->lam + - m01 * f01->lam + m11 * f11->lam; - val.phi = m00 * f00->phi + m10 * f10->phi + - m01 * f01->phi + m11 * f11->phi; - return val; -} |
