test.c

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without ev

    0.130153674349869,
    0.141617770337492,
    0.153081866325116,
    0.164545962312740,
    0.185489128629005,
    0.206432294945271,
    0.227375461261537,
    0.237072082292243,
    0.246768703322951,
    0.256465324353657,
    0.295158618527324,
    0.333851912700991,
    0.372545206874658,
    0.421970143510346,
    0.471395080146033,
    0.520820016781720,
    0.563098250432172,
    0.605376484082623,
    0.647654717733075,
    0.682912914040164,
    0.718171110347252,
    0.753429306654340,
    0.802577532712113,
    0.851725758769885,
    0.900873984827658,
    0.933915989885105,
    0.966957994942553,
    1.000000000000000
  };

  double test_y[31] = { 
    0.000000000000000,
    0.268657574670719,
    0.517940878523929,
    0.729629261832041,
    0.777012551497867,
    0.820298314554859,
    0.859286331568207,
    0.918833991960315,
    0.962624749226346,
    0.989913099419008,
    0.996756196601349,
    0.999858105635752,
    0.999175006262120,
    0.959248551766306,
    0.863713527741856,
    0.717928599519215,
    0.470065187871106,
    0.177694938589523,
    -0.130443237213363,
    -0.385093922365765,
    -0.613840011545983,
    -0.800267961158980,
    -0.912498361131651,
    -0.980219217412290,
    -0.999767873040528,
    -0.943635958253643,
    -0.800314354800596,
    -0.583333769240853,
    -0.403689914131666,
    -0.206151346799382,
    -0.000000000000000
  };

  double test_dy[31] = { 
    6.275761975917336,
    6.039181349093287,
    5.382620652895025,
    4.306079887322550,
    3.957389777282752,
    3.591234754612763,
    3.207614819312586,
    2.473048186927024,
    1.702885029353488,
    0.897125346591982,
    0.513561009477969,
    0.125477545550710,
    -0.267125045189792,
    -1.773533414873785,
    -3.141450982859891,
    -4.370877749148106,
    -5.562104227060234,
    -6.171864888961167,
    -6.200159734850907,
    -5.781556055213110,
    -4.974725570010514,
    -3.779668279243120,
    -2.569220222282655,
    -1.254891157670244,
    0.163318914594122,
    2.074985916277011,
    3.711348850147548,
    5.072407716205733,
    5.754438923510391,
    6.155557010080926,
    6.275761975917336
  };

  double test_iy[31] = {
    0.000000000000000,
    0.005864903144198,
    0.023030998930796,
    0.050262495763030,
    0.058902457844100,
    0.068062330564832,
    0.077693991819461,
    0.096340576055474,
    0.116070578226521,
    0.136546192283223,
    0.146181187290769,
    0.155864434185569,
    0.165559443629720,
    0.203636318965633,
    0.239075190181586,
    0.269828050745236,
    0.299428805999600,
    0.315560685785616,
    0.316734151903742,
    0.305773798930857,
    0.284537037103156,
    0.254466034797342,
    0.224146112780097,
    0.190643050847000,
    0.155590744566140,
    0.107448508851745,
    0.064263083957312,
    0.029987183298960,
    0.013618510529526,
    0.003506827320794,
    0.000090064010007,
  };

  xy_table data_table = make_xy_table(data_x, data_y, 11);
  xy_table test_table = make_xy_table(test_x, test_y, 31);
  xy_table test_d_table = make_xy_table(test_x, test_dy, 31);
  xy_table test_i_table = make_xy_table(test_x, test_iy, 31);

  s = test_interp (&data_table, gsl_interp_cspline_periodic, &test_table, &test_d_table, &test_i_table);
  gsl_test (s, "cspline periodic sine interpolation");
  return s;
}

static int
test_csplinep2 (void)
{
  /* This data tests the periodic case n=3 */
  
  int s;
  
  double data_x[3] = {   
    0.123,
    0.423,
    1.123
  };

  double data_y[3] = {   
    0.456000000000000,
    1.407056516295154,
    0.456000000000000
  } ;

  double test_x[61] = {
    0.123000000000000,
    0.133000000000000,
    0.143000000000000,
    0.153000000000000,
    0.163000000000000,
    0.173000000000000,
    0.183000000000000,
    0.193000000000000,
    0.203000000000000,
    0.213000000000000,
    0.223000000000000,
    0.233000000000000,
    0.243000000000000,
    0.253000000000000,
    0.263000000000000,
    0.273000000000000,
    0.283000000000000,
    0.293000000000000,
    0.303000000000000,
    0.313000000000000,
    0.323000000000000,
    0.333000000000000,
    0.343000000000000,
    0.353000000000000,
    0.363000000000000,
    0.373000000000000,
    0.383000000000000,
    0.393000000000000,
    0.403000000000000,
    0.413000000000000,
    0.423000000000000,
    0.446333333333333,
    0.469666666666667,
    0.493000000000000,
    0.516333333333333,
    0.539666666666667,
    0.563000000000000,
    0.586333333333333,
    0.609666666666667,
    0.633000000000000,
    0.656333333333333,
    0.679666666666667,
    0.703000000000000,
    0.726333333333333,
    0.749666666666667,
    0.773000000000000,
    0.796333333333333,
    0.819666666666667,
    0.843000000000000,
    0.866333333333333,
    0.889666666666667,
    0.913000000000000,
    0.936333333333333,
    0.959666666666667,
    0.983000000000000,
    1.006333333333333,
    1.029666666666667,
    1.053000000000000,
    1.076333333333333,
    1.099666666666667,
    1.123000000000000
  };

  double test_y[61] = { 
    0.456000000000000,
    0.475443822110923,
    0.497423794931967,
    0.521758764840979,
    0.548267578215809,
    0.576769081434305,
    0.607082120874316,
    0.639025542913690,
    0.672418193930275,
    0.707078920301921,
    0.742826568406475,
    0.779479984621787,
    0.816858015325704,
    0.854779506896076,
    0.893063305710751,
    0.931528258147577,
    0.969993210584403,
    1.008277009399078,
    1.046198500969450,
    1.083576531673367,
    1.120229947888679,
    1.155977595993233,
    1.190638322364879,
    1.224030973381464,
    1.255974395420838,
    1.286287434860848,
    1.314788938079344,
    1.341297751454174,
    1.365632721363187,
    1.387612694184230,
    1.407056516295154,
    1.442092968697928,
    1.463321489456714,
    1.471728359403224,
    1.468299859369172,
    1.454022270186272,
    1.429881872686237,
    1.396864947700781,
    1.355957776061616,
    1.308146638600458,
    1.254417816149018,
    1.195757589539010,
    1.133152239602149,
    1.067588047170148,
    1.000051293074719,
    0.931528258147577,
    0.863005223220435,
    0.795468469125006,
    0.729904276693004,
    0.667298926756143,
    0.608638700146136,
    0.554909877694696,
    0.507098740233537,
    0.466191568594372,
    0.433174643608916,
    0.409034246108881,
    0.394756656925981,
    0.391328156891929,
    0.399735026838439,
    0.420963547597225,
    0.456000000000000
  };

  double test_dy[61] = { 
    1.8115362215145774,
    2.0742089736341924,
    2.3187663635386602,
    2.5452083912279826,
    2.7535350567021584,
    2.9437463599611897,
    3.1158423010050744,
    3.2698228798338147,
    3.4056880964474079,
    3.5234379508458549,
    3.6230724430291570,
    3.7045915729973125,
    3.7679953407503231,
    3.8132837462881874,
    3.8404567896109061,
    3.8495144707184790,
    3.8404567896109061,
    3.8132837462881874,
    3.7679953407503231,
    3.7045915729973125,
    3.6230724430291565,
    3.5234379508458549,
    3.4056880964474074,
    3.2698228798338147,
    3.1158423010050749,
    2.9437463599611897,
    2.7535350567021584,
    2.5452083912279830,
    2.3187663635386597,
    2.0742089736341924,
    1.8115362215145772,
    1.1986331332354823,
    0.6279992234583869,
    0.0996344921833026,
    -0.3864610605897765,
    -0.8302874348608467,
    -1.2318446306299125,
    -1.5911326478969707,
    -1.9081514866620208,
    -2.1829011469250670,
    -2.4153816286861041,
    -2.6055929319451341,
    -2.7535350567021584,
    -2.8592080029571765,
    -2.9226117707101862,
    -2.9437463599611893,
    -2.9226117707101862,
    -2.8592080029571760,
    -2.7535350567021593,
    -2.6055929319451354,
    -2.4153816286861045,
    -2.1829011469250656,
    -1.9081514866620242,
    -1.5911326478969716,
    -1.2318446306299160,
    -0.8302874348608498,
    -0.3864610605897769,
    0.0996344921832995,
    0.6279992234583824,
    1.1986331332354769,
    1.8115362215145772
  };

  double test_iy[61] = {
    0.000000000000000,
    0.004655030170954,
    0.009517330277919,
    0.014611356059886,
    0.019959751719625,
    0.025583349923681,
    0.031501171802382,
    0.037730426949832,
    0.044286513423914,
    0.051183017746288,
    0.058431714902395,
    0.066042568341453,
    0.074023729976459,
    0.082381540184189,
    0.091120527805195,
    0.100243410143811,
    0.109751092968147,
    0.119642670510092,
    0.129915425465314,
    0.140564828993259,
    0.151584540717153,
    0.162966408723997,
    0.174700469564574,
    0.186774948253444,
    0.199176258268946,
    0.211889001553197,
    0.224895968512091,
    0.238178138015305,
    0.251714677396289,
    0.265482942452275,
    0.279458477444273,
    0.312726362409309,
    0.346648754292945,
    0.380914974633193,
    0.415237358187469,
    0.449351252932597,
    0.483015020064806,
    0.516010033999735,
    0.548140682372425,
    0.579234366037328,
    0.609141499068300,
    0.637735508758604,
    0.664912835620912,
    0.690592933387298,
    0.714718269009247,
    0.737254322657649,
    0.758189587722801,
    0.777535570814405,
    0.795326791761572,
    0.811620783612819,
    0.826498092636068,
    0.840062278318649,
    0.852439913367300,
    0.863780583708163,
    0.874256888486789,
    0.884064440068133,
    0.893421864036559,
    0.902570799195836,
    0.911775897569142,
    0.921324824399059,
    0.931528258147577
  };

  xy_table data_table = make_xy_table(data_x, data_y, 3);
  xy_table test_table = make_xy_table(test_x, test_y, 61);
  xy_table test_d_table = make_xy_table(test_x, test_dy, 61);
  xy_table test_i_table = make_xy_table(test_x, test_iy, 61);

  s = test_interp (&data_table, gsl_interp_cspline_periodic, &test_table, &test_d_table, &test_i_table);
  gsl_test (s, "cspline periodic 3pt interpolation");
  return s;
}



static int
test_akima (void)
{
  int s;

  double data_x[5] = { 0.0, 1.0, 2.0, 3.0, 4.0 };
  double data_y[5] = { 0.0, 1.0, 2.0, 3.0, 4.0 };
  double test_x[4] = { 0.0, 0.5, 1.0, 2.0 };
  double test_y[4] = { 0.0, 0.5, 1.0, 2.0 };
  double test_dy[4] = { 1.0, 1.0, 1.0, 1.0 };
  double test_iy[4] = { 0.0, 0.125, 0.5, 2.0 };

  xy_table data_table = make_xy_table(data_x, data_y, 5);
  xy_table test_table = make_xy_table(test_x, test_y, 4);
  xy_table test_d_table = make_xy_table(test_x, test_dy, 4);
  xy_table test_i_table = make_xy_table(test_x, test_iy, 4);

  s = test_interp (&data_table, gsl_interp_akima, &test_table, &test_d_table, &test_i_table);
  gsl_test (s, "akima interpolation");
  return s;
}


int 
main (int argc, char **argv)
{
  int status = 0;

  gsl_ieee_env_setup ();

  argc = 0;    /* prevent warnings about unused parameters */
  argv = 0;

  status += test_bsearch();
  status += test_linear();
  status += test_polynomial();
  status += test_cspline();
  status += test_cspline2();
  status += test_cspline3();
  status += test_csplinep();
  status += test_csplinep2();
  status += test_akima();

  exit (gsl_test_summary());
}