/usr/include/gdal/gdalgrid_priv.h is in libgdal-dev 2.1.2+dfsg-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* $Id: gdalgrid_priv.h 33715 2016-03-13 08:52:06Z goatbar $
*
* Project: GDAL Gridding API.
* Purpose: Prototypes, and definitions for of GDAL scattered data gridder.
* Author: Even Rouault, <even dot rouault at mines dash paris dot org>
*
******************************************************************************
* Copyright (c) 2013, Even Rouault <even dot rouault at mines-paris dot org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "cpl_error.h"
#include "cpl_quad_tree.h"
typedef struct
{
const double* padfX;
const double* padfY;
} GDALGridXYArrays;
typedef struct
{
GDALGridXYArrays* psXYArrays;
int i;
} GDALGridPoint;
typedef struct
{
CPLQuadTree* hQuadTree;
double dfInitialSearchRadius;
const float *pafX;
const float *pafY;
const float *pafZ;
GDALTriangulation* psTriangulation;
int nInitialFacetIdx;
/*! Weighting power divided by 2 (pre-computation). */
double dfPowerDiv2PreComp;
/*! The radius of search circle squared (pre-computation). */
double dfRadiusPower2PreComp;
/*! The radius of search circle to power 4 (pre-computation). */
double dfRadiusPower4PreComp;
} GDALGridExtraParameters;
#ifdef HAVE_SSE_AT_COMPILE_TIME
int CPLHaveRuntimeSSE();
CPLErr
GDALGridInverseDistanceToAPower2NoSmoothingNoSearchSSE(
const void *poOptions,
GUInt32 nPoints,
const double *unused_padfX,
const double *unused_padfY,
const double *unused_padfZ,
double dfXPoint, double dfYPoint,
double *pdfValue,
void* hExtraParamsIn );
#endif
#ifdef HAVE_AVX_AT_COMPILE_TIME
int CPLHaveRuntimeAVX();
CPLErr GDALGridInverseDistanceToAPower2NoSmoothingNoSearchAVX(
const void *poOptions,
GUInt32 nPoints,
const double *unused_padfX,
const double *unused_padfY,
const double *unused_padfZ,
double dfXPoint, double dfYPoint,
double *pdfValue,
void* hExtraParamsIn );
#endif
#if defined(__GNUC__)
#if defined(__x86_64)
#define GCC_CPUID(level, a, b, c, d) \
__asm__ ("xchgq %%rbx, %q1\n" \
"cpuid\n" \
"xchgq %%rbx, %q1" \
: "=a" (a), "=r" (b), "=c" (c), "=d" (d) \
: "0" (level))
#else
#define GCC_CPUID(level, a, b, c, d) \
__asm__ ("xchgl %%ebx, %1\n" \
"cpuid\n" \
"xchgl %%ebx, %1" \
: "=a" (a), "=r" (b), "=c" (c), "=d" (d) \
: "0" (level))
#endif
#endif
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