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Issue at the south axis #182

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Merged
alisagk merged 1 commit into from
Feb 25, 2026
+2 −6
Merged

Issue at the south axis #182

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8 changes: 2 additions & 6 deletions src/kernels/ampere_gr.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -76,18 +76,14 @@ namespace kernel::gr {

if ((i2 == i2min) && is_axis_i2min) {
// theta = 0
const real_t inv_polar_area_pH { ONE / metric.polar_area(i1_ + HALF) };
const real_t inv_sqrt_detH_0pH { ONE / metric.sqrt_det_h({ i1_, HALF }) };
Dout(i1, i2, em::dx1) = Din(i1, i2, em::dx1) +
inv_polar_area_pH * coeff * H(i1, i2, em::hx3);
Dout(i1, i2, em::dx1) = Din(i1, i2 + 1, em::dx1);
Dout(i1, i2, em::dx2) = Din(i1, i2, em::dx2) +
coeff * inv_sqrt_detH_0pH *
(H(i1 - 1, i2, em::hx3) - H(i1, i2, em::hx3));
} else if ((i2 == i2max) && is_axis_i2max) {
// theta = pi
const real_t inv_polar_area_pH { ONE / metric.polar_area(i1_ + HALF) };
Dout(i1, i2, em::dx1) = Din(i1, i2, em::dx1) - inv_polar_area_pH * coeff *
H(i1, i2 - 1, em::hx3);
Dout(i1, i2, em::dx1) = Din(i1, i2 - 1, em::dx1);
} else {
const real_t inv_sqrt_detH_00 { ONE / metric.sqrt_det_h({ i1_, i2_ }) };
const real_t inv_sqrt_detH_pH0 { ONE / metric.sqrt_det_h(
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