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fixed nmul to use get_half_shift_cycles

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Zeno Rogue 2024-07-21 12:18:14 +02:00
parent 1e1ca5e795
commit 54f476df0d
1 changed files with 6 additions and 2 deletions
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8
nonisotropic.cpp
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@ -2573,6 +2573,10 @@ EX namespace twist {
return floor(shift / TAU + .5) * TAU; return floor(shift / TAU + .5) * TAU;
} }
EX ld get_half_shift_cycles(ld shift) {
return floor(shift / M_PI + .5) * M_PI;
}
EX transmatrix chg_shift(ld x) { EX transmatrix chg_shift(ld x) {
return cspin(2, 3, x) * cspin(0, 1, x); return cspin(2, 3, x) * cspin(0, 1, x);
} }
@ -2580,7 +2584,7 @@ EX namespace twist {
/** multiply a SLR-shiftmatrix by a SLR-shiftpoint */ /** multiply a SLR-shiftmatrix by a SLR-shiftpoint */
EX shiftpoint nmul(const shiftmatrix& T, shiftpoint h) { EX shiftpoint nmul(const shiftmatrix& T, shiftpoint h) {
optimize_shift(h); optimize_shift(h);
ld sh = get_shift_cycles(h.shift); ld sh = get_half_shift_cycles(h.shift);
h.shift -= sh; h.shift -= sh;
auto res0 = T; auto res0 = T;
optimize_shift(res0); optimize_shift(res0);
@ -2597,7 +2601,7 @@ EX namespace twist {
/** multiply a SLR-shiftmatrix by a SLR-shiftmatrix */ /** multiply a SLR-shiftmatrix by a SLR-shiftmatrix */
EX shiftmatrix nmul(const shiftmatrix& T, shiftmatrix h) { EX shiftmatrix nmul(const shiftmatrix& T, shiftmatrix h) {
optimize_shift(h); optimize_shift(h);
ld sh = get_shift_cycles(h.shift); ld sh = get_half_shift_cycles(h.shift);
h.shift -= sh; h.shift -= sh;
auto res0 = T; auto res0 = T;