Mercurial > hg > octave-lojdl
changeset 9103:10bed8fbec99
optimize scalar .^ range operation
author | Jaroslav Hajek <highegg@gmail.com> |
---|---|
date | Wed, 08 Apr 2009 10:53:06 +0200 |
parents | 9dc516d36175 |
children | e0250e2b60ed |
files | src/ChangeLog src/OPERATORS/op-range.cc src/xpow.cc src/xpow.h |
diffstat | 4 files changed, 79 insertions(+), 0 deletions(-) [+] |
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--- a/src/ChangeLog +++ b/src/ChangeLog @@ -1,3 +1,11 @@ +2009-04-08 Jaroslav Hajek <highegg@gmail.com> + + * xpow.cc (elem_xpow (double, const Range&), + elem_xpow (const Complex&, const Range&)): New functions. + * xpow.h: Declare them. + * OPERATORS/op-range.cc: Define scalar .^ range and complex .^ range & + install them. + 2009-04-04 Jaroslav Hajek <highegg@gmail.com> * ov-struct.cc (octave_struct::subsasgn): Fix reference counting
--- a/src/OPERATORS/op-range.cc +++ b/src/OPERATORS/op-range.cc @@ -40,6 +40,7 @@ #include "ov-typeinfo.h" #include "ov-null-mat.h" #include "ops.h" +#include "xpow.h" // range unary ops. @@ -67,6 +68,9 @@ DEFBINOP_OP (mulrs, range, scalar, *) DEFBINOP_OP (mulsr, scalar, range, *) +DEFBINOP_FN (el_powsr, scalar, range, elem_xpow) +DEFBINOP_FN (el_powcsr, complex, range, elem_xpow) + DEFNDCATOP_FN (r_r, range, range, array, array, concat) DEFNDCATOP_FN (r_s, range, scalar, array, array, concat) DEFNDCATOP_FN (r_m, range, matrix, array, array, concat) @@ -106,6 +110,9 @@ INSTALL_BINOP (op_mul, octave_range, octave_scalar, mulrs); INSTALL_BINOP (op_mul, octave_scalar, octave_range, mulsr); + INSTALL_BINOP (op_el_pow, octave_scalar, octave_range, el_powsr); + INSTALL_BINOP (op_el_pow, octave_complex, octave_range, el_powcsr); + INSTALL_CATOP (octave_range, octave_range, r_r); INSTALL_CATOP (octave_range, octave_scalar, r_s); INSTALL_CATOP (octave_range, octave_matrix, r_m);
--- a/src/xpow.cc +++ b/src/xpow.cc @@ -41,6 +41,7 @@ #include "PermMatrix.h" #include "mx-cm-cdm.h" #include "oct-cmplx.h" +#include "Range.h" #include "quit.h" #include "error.h" @@ -691,6 +692,43 @@ return result; } +octave_value +elem_xpow (double a, const Range& r) +{ + octave_value retval; + + if (r.nelem () <= 0) + retval = Matrix (); + else if (a < 0.0 && ! r.all_elements_are_ints ()) + { + ComplexMatrix mat (1, r.nelem ()); + Complex atmp (a); + Complex *pmat = mat.fortran_vec (); + + pmat[0] = std::pow (atmp, r.base ()); + Complex mul = std::pow (atmp, r.inc ()); + for (octave_idx_type i = 1; i < r.nelem (); i++) + pmat[i] = pmat[i-1] * mul; + + retval = mat; + } + else + { + Matrix mat (1, r.nelem ()); + double *pmat = mat.fortran_vec (); + + double base = std::pow (a, r.base ()); + pmat[0] = base; + double mul = std::pow (a, r.inc ()); + for (octave_idx_type i = 1; i < r.nelem (); i++) + pmat[i] = (base *= mul); + + retval = mat; + } + + return retval; +} + // -*- 3 -*- octave_value elem_xpow (const Matrix& a, double b) @@ -888,6 +926,29 @@ return result; } +octave_value +elem_xpow (const Complex& a, const Range& r) +{ + octave_value retval; + + if (r.nelem () <= 0) + retval = Matrix (); + else + { + ComplexMatrix mat (1, r.nelem ()); + Complex *pmat = mat.fortran_vec (); + + pmat[0] = std::pow (a, r.base ()); + Complex mul = std::pow (a, r.inc ()); + for (octave_idx_type i = 1; i < r.nelem (); i++) + pmat[i] = pmat[i-1] * mul; + + retval = mat; + } + + return retval; +} + // -*- 9 -*- octave_value elem_xpow (const ComplexMatrix& a, double b)
--- a/src/xpow.h +++ b/src/xpow.h @@ -40,6 +40,7 @@ class ComplexNDArray; class FloatComplexNDArray; class octave_value; +class Range; extern octave_value xpow (double a, double b); extern octave_value xpow (double a, const Matrix& b); @@ -67,6 +68,7 @@ extern octave_value elem_xpow (double a, const Matrix& b); extern octave_value elem_xpow (double a, const ComplexMatrix& b); +extern octave_value elem_xpow (double a, const Range& r); extern octave_value elem_xpow (const Matrix& a, double b); extern octave_value elem_xpow (const Matrix& a, const Matrix& b); @@ -75,6 +77,7 @@ extern octave_value elem_xpow (const Complex& a, const Matrix& b); extern octave_value elem_xpow (const Complex& a, const ComplexMatrix& b); +extern octave_value elem_xpow (const Complex& a, const Range& r); extern octave_value elem_xpow (const ComplexMatrix& a, double b); extern octave_value elem_xpow (const ComplexMatrix& a, const Matrix& b);