github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/geo/geographiclib/geographiclib.cc (about)

     1  // Copyright 2020 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  #include "geodesic.h"
    12  #include "geographiclib.h"
    13  
    14  void CR_GEOGRAPHICLIB_InverseBatch(
    15    struct geod_geodesic* spheroid,
    16    double lats[],
    17    double lngs[],
    18    int len,
    19    double *result
    20  ) {
    21    *result = 0;
    22    for (int i = 0; i < len - 1; i++) {
    23      double s12, az1, az2;
    24      geod_inverse(spheroid, lats[i], lngs[i], lats[i+1], lngs[i+1], &s12, &az1, &az2);
    25      *result += s12;
    26    }
    27  }