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-rw-r--r--src/pj_deriv.c16
-rw-r--r--src/pj_factors.c2
2 files changed, 9 insertions, 9 deletions
diff --git a/src/pj_deriv.c b/src/pj_deriv.c
index 6e9e3b82..1c969a9d 100644
--- a/src/pj_deriv.c
+++ b/src/pj_deriv.c
@@ -17,8 +17,8 @@ int pj_deriv(LP lp, double h, PJ *P, struct DERIVS *der) {
der->x_l = t.x;
der->y_p = t.y;
- der->x_p = -t.x;
- der->y_l = -t.y;
+ der->x_p = t.x;
+ der->y_l = t.y;
lp.phi -= h;
if (fabs(lp.phi) > M_HALFPI)
return 1;
@@ -29,8 +29,8 @@ int pj_deriv(LP lp, double h, PJ *P, struct DERIVS *der) {
der->x_l += t.x;
der->y_p -= t.y;
- der->x_p += t.x;
- der->y_l -= t.y;
+ der->x_p -= t.x;
+ der->y_l += t.y;
lp.lam -= h;
t = (*P->fwd)(lp, P);
if (t.x == HUGE_VAL)
@@ -38,8 +38,8 @@ int pj_deriv(LP lp, double h, PJ *P, struct DERIVS *der) {
der->x_l -= t.x;
der->y_p -= t.y;
- der->x_p += t.x;
- der->y_l += t.y;
+ der->x_p -= t.x;
+ der->y_l -= t.y;
lp.phi += h;
t = (*P->fwd)(lp, P);
if (t.x == HUGE_VAL)
@@ -47,8 +47,8 @@ int pj_deriv(LP lp, double h, PJ *P, struct DERIVS *der) {
der->x_l -= t.x;
der->y_p += t.y;
- der->x_p -= t.x;
- der->y_l += t.y;
+ der->x_p += t.x;
+ der->y_l -= t.y;
der->x_l /= (h += h);
der->y_p /= h;
der->x_p /= h;
diff --git a/src/pj_factors.c b/src/pj_factors.c
index fb4a1dd4..6c1b4978 100644
--- a/src/pj_factors.c
+++ b/src/pj_factors.c
@@ -72,7 +72,7 @@ int pj_factors(LP lp, PJ *P, double h, struct FACTORS *fac) {
/* convergence */
if (!(fac->code & IS_ANAL_CONV)) {
- fac->conv = - atan2(fac->der.y_l, fac->der.x_l);
+ fac->conv = - atan2(fac->der.x_p, fac->der.y_p);
if (fac->code & IS_ANAL_XL_YL)
fac->code |= IS_ANAL_CONV;
}