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$EXE +units=us-ft +init=${INIT_FILE}:404 -E -f '%.3f' >>${OUT} <<EOF
(`#404 <https://github.com/OSGeo/proj.4/issues/404>`_)
{"CPM", "a=6375738.7", "rf=334.29", "Comm. des Poids et Mesures 1799"},
double lamtp, cl, sd, sp, sav, tanphi;
sav = lampp;
lamt = lp.lam + Q->p22 * sav;
if (fabs(fabs(sav) - fabs(lamdp)) < TOL)
sav = lamdp;
double lamt, sdsq, s, lamdp, phidp, sppsq, dd, sd, sl, fac, scl, sav, spp;
sav = lamdp;
} while (fabs(lamdp - sav) >= TOL && --nn);
double yt, ba;
ba = 1. / (yt * Q->sw * Q->h + Q->cw);
xy.x = (xy.x * Q->cg - xy.y * Q->sg) * Q->cw * ba;
xy.y = yt * ba;
* This implements Space Oblique Mercator (SOM) projection, used by the
* The code is identical to that of Landsat SOM (PJ_lsat.c) with the following
static double phi1_(double qs, double Te, double Tone_es) {
if (Te < EPSILON)
con = Te * sinpi;
sinpi / com + .5 / Te * log ((1. - con) /
else { /* point mean of intersepts */
operation proj=latlong geoidgrids=egm96_15.gtx axis=dne ellps=GRS80
Url = {https://geodesie.ign.fr/contenu/fichiers/documentation/algorithmes/notice/NTG_88.pdf}
it (neither in current documentation, nor in `historic one <https://web.archive.org/web/20160601000000*/http://trac.osgeo.org/proj/wiki/GenParms>`_).
`Deformation model master file <https://github.com/linz/deformation-model-format>`_
of a Deformation Model <https://github.com/linz/deformation-model-format/blob/master/doc/JsonGeotiffDeformationModelFormat_20200501.pdf>`__
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