60 lines
2.4 KiB
SAS
60 lines
2.4 KiB
SAS
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Preprocessed Scalar
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value(in Scalar vertex)
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{
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return vertex[vertexIdx];
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}
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Preprocessed Vector
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gradient(in Scalar vertex)
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{
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return (Vector){derx(vertexIdx, vertex),
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dery(vertexIdx, vertex),
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derz(vertexIdx, vertex)};
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}
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Preprocessed Scalar
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der6x_upwd(in Scalar vertex),
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{
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return (Scalar){(1.0/60.0)*inv_ds* (
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- 20.0* vertex[vertexIdx.x, vertexIdx.y, vertexIdx.z]
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+ 15.0*(vertex[vertexIdx.x, vertexIdx.y+1, vertexIdx.z] + vertex[vertexIdx.x, vertexIdx.y-1, vertexIdx.z])
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- 6.0*(vertex[vertexIdx.x, vertexIdx.y+2, vertexIdx.z] + vertex[vertexIdx.x, vertexIdx.y-2, vertexIdx.z])
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+ vertex[vertexIdx.x, vertexIdx.y+3, vertexIdx.z] + vertex[vertexIdx.x, vertexIdx.y-3, vertexIdx.z];
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)}
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}
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Preprocessed Scalar
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der6y_upwd(in Scalar vertex),
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{
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return (Scalar){(1.0/60.0)*inv_ds* (
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- 20.0* vertex[vertexIdx.x, vertexIdx.y, vertexIdx.z]
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+ 15.0*(vertex[vertexIdx.x, vertexIdx.y+1, vertexIdx.z] + vertex[vertexIdx.x, vertexIdx.y-1, vertexIdx.z])
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- 6.0*(vertex[vertexIdx.x, vertexIdx.y+2, vertexIdx.z] + vertex[vertexIdx.x, vertexIdx.y-2, vertexIdx.z])
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+ vertex[vertexIdx.x, vertexIdx.y+3, vertexIdx.z] + vertex[vertexIdx.x, vertexIdx.y-3, vertexIdx.z];
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)}
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}
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Preprocessed Scalar
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der6z_upwd(in Scalar vertex),
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{
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return (Scalar){(1.0/60.0)*inv_ds* (
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- 20.0* vertex[vertexIdx.x, vertexIdx.y, vertexIdx.z]
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+ 15.0*(vertex[vertexIdx.x, vertexIdx.y, vertexIdx.z+1] + vertex[vertexIdx.x, vertexIdx.y, vertexIdx.z-1])
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- 6.0*(vertex[vertexIdx.x, vertexIdx.y, vertexIdx.z+2] + vertex[vertexIdx.x, vertexIdx.y, vertexIdx.z-2])
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+ vertex[vertexIdx.x, vertexIdx.y, vertexIdx.z+3] + vertex[vertexIdx.x, vertexIdx.y, vertexIdx.z-3];
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)}
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}
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Preprocessed Matrix
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hessian(in Scalar vertex)
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{
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Matrix hessian;
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hessian.row[0] = (Vector){derxx(vertexIdx, vertex), derxy(vertexIdx, vertex), derxz(vertexIdx, vertex)};
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hessian.row[1] = (Vector){hessian.row[0].y, deryy(vertexIdx, vertex), deryz(vertexIdx, vertex)};
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hessian.row[2] = (Vector){hessian.row[0].z, hessian.row[1].z, derzz(vertexIdx, vertex)};
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return hessian;
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}
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