Mercurial > octave-nkf
view liboctave/numeric/lo-mappers.cc @ 17769:49a5a4be04a1
maint: Use GNU style coding conventions for code in liboctave/
* liboctave/array/Array-C.cc, liboctave/array/Array-b.cc,
liboctave/array/Array-ch.cc, liboctave/array/Array-d.cc,
liboctave/array/Array-f.cc, liboctave/array/Array-fC.cc,
liboctave/array/Array-util.cc, liboctave/array/Array-util.h,
liboctave/array/Array.cc, liboctave/array/Array.h, liboctave/array/Array3.h,
liboctave/array/CColVector.cc, liboctave/array/CColVector.h,
liboctave/array/CDiagMatrix.cc, liboctave/array/CDiagMatrix.h,
liboctave/array/CMatrix.cc, liboctave/array/CMatrix.h,
liboctave/array/CNDArray.cc, liboctave/array/CNDArray.h,
liboctave/array/CRowVector.cc, liboctave/array/CRowVector.h,
liboctave/array/CSparse.cc, liboctave/array/CSparse.h,
liboctave/array/DiagArray2.h, liboctave/array/MArray.cc,
liboctave/array/MArray.h, liboctave/array/MDiagArray2.cc,
liboctave/array/MDiagArray2.h, liboctave/array/MSparse.cc,
liboctave/array/MSparse.h, liboctave/array/MatrixType.cc,
liboctave/array/MatrixType.h, liboctave/array/PermMatrix.h,
liboctave/array/Range.cc, liboctave/array/Range.h, liboctave/array/Sparse.cc,
liboctave/array/Sparse.h, liboctave/array/boolMatrix.cc,
liboctave/array/boolMatrix.h, liboctave/array/boolNDArray.cc,
liboctave/array/boolNDArray.h, liboctave/array/boolSparse.cc,
liboctave/array/boolSparse.h, liboctave/array/chMatrix.cc,
liboctave/array/chMatrix.h, liboctave/array/chNDArray.cc,
liboctave/array/chNDArray.h, liboctave/array/dColVector.h,
liboctave/array/dDiagMatrix.cc, liboctave/array/dDiagMatrix.h,
liboctave/array/dMatrix.cc, liboctave/array/dMatrix.h,
liboctave/array/dNDArray.cc, liboctave/array/dNDArray.h,
liboctave/array/dRowVector.h, liboctave/array/dSparse.cc,
liboctave/array/dSparse.h, liboctave/array/dim-vector.cc,
liboctave/array/dim-vector.h, liboctave/array/fCColVector.cc,
liboctave/array/fCColVector.h, liboctave/array/fCDiagMatrix.cc,
liboctave/array/fCDiagMatrix.h, liboctave/array/fCMatrix.cc,
liboctave/array/fCMatrix.h, liboctave/array/fCNDArray.cc,
liboctave/array/fCNDArray.h, liboctave/array/fCRowVector.cc,
liboctave/array/fCRowVector.h, liboctave/array/fColVector.h,
liboctave/array/fDiagMatrix.cc, liboctave/array/fDiagMatrix.h,
liboctave/array/fMatrix.cc, liboctave/array/fMatrix.h,
liboctave/array/fNDArray.cc, liboctave/array/fNDArray.h,
liboctave/array/fRowVector.h, liboctave/array/idx-vector.cc,
liboctave/array/idx-vector.h, liboctave/array/intNDArray.cc,
liboctave/array/intNDArray.h, liboctave/cruft/misc/blaswrap.c,
liboctave/cruft/misc/quit.cc, liboctave/numeric/CmplxCHOL.cc,
liboctave/numeric/CmplxCHOL.h, liboctave/numeric/CmplxGEPBAL.cc,
liboctave/numeric/CmplxGEPBAL.h, liboctave/numeric/CmplxHESS.h,
liboctave/numeric/CmplxLU.cc, liboctave/numeric/CmplxLU.h,
liboctave/numeric/CmplxQR.cc, liboctave/numeric/CmplxQRP.cc,
liboctave/numeric/CmplxQRP.h, liboctave/numeric/CmplxSCHUR.h,
liboctave/numeric/CmplxSVD.cc, liboctave/numeric/CmplxSVD.h,
liboctave/numeric/CollocWt.h, liboctave/numeric/DAE.h,
liboctave/numeric/DAEFunc.h, liboctave/numeric/DAERT.h,
liboctave/numeric/DAERTFunc.h, liboctave/numeric/DASPK.cc,
liboctave/numeric/DASRT.cc, liboctave/numeric/DASRT.h,
liboctave/numeric/DASSL.cc, liboctave/numeric/DET.h, liboctave/numeric/EIG.cc,
liboctave/numeric/EIG.h, liboctave/numeric/LSODE.cc, liboctave/numeric/ODE.h,
liboctave/numeric/ODEFunc.h, liboctave/numeric/ODES.h,
liboctave/numeric/ODESFunc.h, liboctave/numeric/Quad.cc,
liboctave/numeric/Quad.h, liboctave/numeric/SparseCmplxCHOL.h,
liboctave/numeric/SparseCmplxLU.cc, liboctave/numeric/SparseCmplxLU.h,
liboctave/numeric/SparseCmplxQR.cc, liboctave/numeric/SparseCmplxQR.h,
liboctave/numeric/SparseQR.cc, liboctave/numeric/SparseQR.h,
liboctave/numeric/SparsedbleCHOL.h, liboctave/numeric/SparsedbleLU.cc,
liboctave/numeric/SparsedbleLU.h, liboctave/numeric/base-aepbal.h,
liboctave/numeric/base-dae.h, liboctave/numeric/base-de.h,
liboctave/numeric/base-lu.cc, liboctave/numeric/base-lu.h,
liboctave/numeric/base-min.h, liboctave/numeric/base-qr.h,
liboctave/numeric/bsxfun.h, liboctave/numeric/dbleCHOL.cc,
liboctave/numeric/dbleCHOL.h, liboctave/numeric/dbleGEPBAL.h,
liboctave/numeric/dbleHESS.h, liboctave/numeric/dbleLU.cc,
liboctave/numeric/dbleLU.h, liboctave/numeric/dbleQR.cc,
liboctave/numeric/dbleQRP.cc, liboctave/numeric/dbleQRP.h,
liboctave/numeric/dbleSCHUR.cc, liboctave/numeric/dbleSCHUR.h,
liboctave/numeric/dbleSVD.cc, liboctave/numeric/dbleSVD.h,
liboctave/numeric/eigs-base.cc, liboctave/numeric/fCmplxAEPBAL.cc,
liboctave/numeric/fCmplxAEPBAL.h, liboctave/numeric/fCmplxCHOL.cc,
liboctave/numeric/fCmplxCHOL.h, liboctave/numeric/fCmplxGEPBAL.cc,
liboctave/numeric/fCmplxGEPBAL.h, liboctave/numeric/fCmplxHESS.h,
liboctave/numeric/fCmplxLU.cc, liboctave/numeric/fCmplxLU.h,
liboctave/numeric/fCmplxQR.cc, liboctave/numeric/fCmplxQR.h,
liboctave/numeric/fCmplxQRP.cc, liboctave/numeric/fCmplxQRP.h,
liboctave/numeric/fCmplxSCHUR.cc, liboctave/numeric/fCmplxSCHUR.h,
liboctave/numeric/fCmplxSVD.h, liboctave/numeric/fEIG.cc,
liboctave/numeric/fEIG.h, liboctave/numeric/floatCHOL.cc,
liboctave/numeric/floatCHOL.h, liboctave/numeric/floatGEPBAL.cc,
liboctave/numeric/floatGEPBAL.h, liboctave/numeric/floatHESS.h,
liboctave/numeric/floatLU.cc, liboctave/numeric/floatLU.h,
liboctave/numeric/floatQR.cc, liboctave/numeric/floatQRP.cc,
liboctave/numeric/floatQRP.h, liboctave/numeric/floatSCHUR.cc,
liboctave/numeric/floatSCHUR.h, liboctave/numeric/floatSVD.cc,
liboctave/numeric/floatSVD.h, liboctave/numeric/lo-mappers.cc,
liboctave/numeric/lo-mappers.h, liboctave/numeric/lo-specfun.cc,
liboctave/numeric/lo-specfun.h, liboctave/numeric/oct-convn.cc,
liboctave/numeric/oct-fftw.cc, liboctave/numeric/oct-fftw.h,
liboctave/numeric/oct-norm.cc, liboctave/numeric/oct-rand.cc,
liboctave/numeric/oct-rand.h, liboctave/numeric/randgamma.c,
liboctave/numeric/randgamma.h, liboctave/numeric/randmtzig.c,
liboctave/numeric/randpoisson.c, liboctave/numeric/randpoisson.h,
liboctave/numeric/sparse-base-chol.h, liboctave/numeric/sparse-base-lu.h,
liboctave/numeric/sparse-dmsolve.cc, liboctave/operators/Sparse-diag-op-defs.h,
liboctave/operators/Sparse-op-defs.h, liboctave/operators/mx-inlines.cc,
liboctave/system/dir-ops.h, liboctave/system/file-ops.cc,
liboctave/system/file-stat.cc, liboctave/system/file-stat.h,
liboctave/system/lo-sysdep.cc, liboctave/system/lo-sysdep.h,
liboctave/system/mach-info.cc, liboctave/system/mach-info.h,
liboctave/system/oct-env.cc, liboctave/system/oct-group.cc,
liboctave/system/oct-syscalls.cc, liboctave/system/oct-syscalls.h,
liboctave/system/oct-time.h, liboctave/system/tempname.c,
liboctave/util/action-container.h, liboctave/util/base-list.h,
liboctave/util/cmd-edit.cc, liboctave/util/cmd-edit.h,
liboctave/util/cmd-hist.cc, liboctave/util/cmd-hist.h,
liboctave/util/data-conv.cc, liboctave/util/data-conv.h,
liboctave/util/kpse.cc, liboctave/util/lo-array-gripes.cc,
liboctave/util/lo-cieee.c, liboctave/util/lo-regexp.cc,
liboctave/util/lo-utils.cc, liboctave/util/oct-alloc.cc,
liboctave/util/oct-base64.cc, liboctave/util/oct-binmap.h,
liboctave/util/oct-cmplx.h, liboctave/util/oct-glob.cc,
liboctave/util/oct-inttypes.cc, liboctave/util/oct-inttypes.h,
liboctave/util/oct-locbuf.cc, liboctave/util/oct-locbuf.h,
liboctave/util/oct-mem.h, liboctave/util/oct-mutex.cc,
liboctave/util/oct-refcount.h, liboctave/util/oct-shlib.cc,
liboctave/util/oct-shlib.h, liboctave/util/oct-sort.cc,
liboctave/util/oct-sort.h, liboctave/util/pathsearch.cc,
liboctave/util/pathsearch.h, liboctave/util/sparse-util.cc,
liboctave/util/str-vec.cc, liboctave/util/str-vec.h,
liboctave/util/unwind-prot.h, liboctave/util/url-transfer.cc,
liboctave/util/url-transfer.h: Use GNU style coding conventions.
author | Rik <rik@octave.org> |
---|---|
date | Sat, 26 Oct 2013 18:57:05 -0700 |
parents | d63878346099 |
children | 573f865aa8c8 |
line wrap: on
line source
/* Copyright (C) 1996-2013 John W. Eaton Copyright (C) 2010 VZLU Prague This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <cfloat> #include "lo-error.h" #include "lo-ieee.h" #include "lo-mappers.h" #include "lo-math.h" #include "lo-specfun.h" #include "lo-utils.h" #include "oct-cmplx.h" #include "f77-fcn.h" // double -> double mappers. // Both xtrunc and xround belong here so we can keep gnulib:: out of // lo-mappers.h. double xtrunc (double x) { return gnulib::trunc (x); } double xcopysign (double x, double y) { return gnulib::copysign (x, y); } double xfloor (double x) { return gnulib::floor (x); } double xround (double x) { return gnulib::round (x); } double xroundb (double x) { double t = xround (x); if (fabs (x - t) == 0.5) t = 2 * xtrunc (0.5 * t); return t; } double signum (double x) { double tmp = 0.0; if (x < 0.0) tmp = -1.0; else if (x > 0.0) tmp = 1.0; return xisnan (x) ? octave_NaN : tmp; } double xlog2 (double x) { #if defined (HAVE_LOG2) return log2 (x); #else #if defined (M_LN2) static double ln2 = M_LN2; #else static double ln2 = log (2); #endif return log (x) / ln2; #endif } Complex xlog2 (const Complex& x) { #if defined (M_LN2) static double ln2 = M_LN2; #else static double ln2 = log (2); #endif return std::log (x) / ln2; } double xexp2 (double x) { #if defined (HAVE_EXP2) return exp2 (x); #else #if defined (M_LN2) static double ln2 = M_LN2; #else static double ln2 = log (2); #endif return exp (x * ln2); #endif } double xlog2 (double x, int& exp) { return frexp (x, &exp); } Complex xlog2 (const Complex& x, int& exp) { double ax = std::abs (x); double lax = xlog2 (ax, exp); return (ax != lax) ? (x / ax) * lax : x; } // double -> bool mappers. #if ! defined(HAVE_CMATH_ISNAN) bool xisnan (double x) { return lo_ieee_isnan (x); } #endif #if ! defined(HAVE_CMATH_ISFINITE) bool xfinite (double x) { return lo_ieee_finite (x); } #endif #if ! defined(HAVE_CMATH_ISINF) bool xisinf (double x) { return lo_ieee_isinf (x); } #endif bool octave_is_NA (double x) { return lo_ieee_is_NA (x); } bool octave_is_NaN_or_NA (double x) { return lo_ieee_isnan (x); } // (double, double) -> double mappers. // complex -> complex mappers. Complex acos (const Complex& x) { static Complex i (0, 1); return -i * (log (x + i * (sqrt (1.0 - x*x)))); } Complex acosh (const Complex& x) { return log (x + sqrt (x*x - 1.0)); } Complex asin (const Complex& x) { static Complex i (0, 1); return -i * log (i*x + sqrt (1.0 - x*x)); } Complex asinh (const Complex& x) { return log (x + sqrt (x*x + 1.0)); } Complex atan (const Complex& x) { static Complex i (0, 1); return i * log ((i + x) / (i - x)) / 2.0; } Complex atanh (const Complex& x) { return log ((1.0 + x) / (1.0 - x)) / 2.0; } // complex -> bool mappers. bool octave_is_NA (const Complex& x) { return (octave_is_NA (real (x)) || octave_is_NA (imag (x))); } bool octave_is_NaN_or_NA (const Complex& x) { return (xisnan (real (x)) || xisnan (imag (x))); } // (complex, complex) -> complex mappers. // FIXME: need to handle NA too? Complex xmin (const Complex& x, const Complex& y) { return abs (x) <= abs (y) ? x : (xisnan (x) ? x : y); } Complex xmax (const Complex& x, const Complex& y) { return abs (x) >= abs (y) ? x : (xisnan (x) ? x : y); } // float -> float mappers. // Both xtrunc and xround belong here so we can keep gnulib:: out of // lo-mappers.h. float xtrunc (float x) { return gnulib::truncf (x); } float xcopysign (float x, float y) { return gnulib::copysignf (x, y); } float xfloor (float x) { return gnulib::floorf (x); } float xround (float x) { return gnulib::roundf (x); } float xroundb (float x) { float t = xround (x); if (fabsf (x - t) == 0.5) t = 2 * xtrunc (0.5 * t); return t; } float signum (float x) { float tmp = 0.0; if (x < 0.0) tmp = -1.0; else if (x > 0.0) tmp = 1.0; return xisnan (x) ? octave_Float_NaN : tmp; } float xlog2 (float x) { #if defined (HAVE_LOG2F) return log2f (x); #elif defined (HAVE_LOG2) return log2 (x); #else #if defined (M_LN2) static float ln2 = M_LN2; #else static float ln2 = log2 (2); #endif return log (x) / ln2; #endif } FloatComplex xlog2 (const FloatComplex& x) { #if defined (M_LN2) static float ln2 = M_LN2; #else static float ln2 = log (2); #endif return std::log (x) / ln2; } float xexp2 (float x) { #if defined (HAVE_EXP2F) return exp2f (x); #elif defined (HAVE_EXP2) return exp2 (x); #else #if defined (M_LN2) static float ln2 = M_LN2; #else static float ln2 = log2 (2); #endif return exp (x * ln2); #endif } float xlog2 (float x, int& exp) { return frexpf (x, &exp); } FloatComplex xlog2 (const FloatComplex& x, int& exp) { float ax = std::abs (x); float lax = xlog2 (ax, exp); return (ax != lax) ? (x / ax) * lax : x; } // float -> bool mappers. #if ! defined(HAVE_CMATH_ISNANF) bool xisnan (float x) { return lo_ieee_isnan (x); } #endif #if ! defined(HAVE_CMATH_ISFINITEF) bool xfinite (float x) { return lo_ieee_finite (x); } #endif #if ! defined(HAVE_CMATH_ISINFF) bool xisinf (float x) { return lo_ieee_isinf (x); } #endif bool octave_is_NA (float x) { return lo_ieee_is_NA (x); } bool octave_is_NaN_or_NA (float x) { return lo_ieee_isnan (x); } // (float, float) -> float mappers. // complex -> complex mappers. FloatComplex acos (const FloatComplex& x) { static FloatComplex i (0, 1); return -i * (log (x + i * (sqrt (static_cast<float>(1.0) - x*x)))); } FloatComplex acosh (const FloatComplex& x) { return log (x + sqrt (x*x - static_cast<float>(1.0))); } FloatComplex asin (const FloatComplex& x) { static FloatComplex i (0, 1); return -i * log (i*x + sqrt (static_cast<float>(1.0) - x*x)); } FloatComplex asinh (const FloatComplex& x) { return log (x + sqrt (x*x + static_cast<float>(1.0))); } FloatComplex atan (const FloatComplex& x) { static FloatComplex i (0, 1); return i * log ((i + x) / (i - x)) / static_cast<float>(2.0); } FloatComplex atanh (const FloatComplex& x) { return log ((static_cast<float>(1.0) + x) / (static_cast<float> (1.0) - x)) / static_cast<float>(2.0); } // complex -> bool mappers. bool octave_is_NA (const FloatComplex& x) { return (octave_is_NA (real (x)) || octave_is_NA (imag (x))); } bool octave_is_NaN_or_NA (const FloatComplex& x) { return (xisnan (real (x)) || xisnan (imag (x))); } // (complex, complex) -> complex mappers. // FIXME: need to handle NA too? FloatComplex xmin (const FloatComplex& x, const FloatComplex& y) { return abs (x) <= abs (y) ? x : (xisnan (x) ? x : y); } FloatComplex xmax (const FloatComplex& x, const FloatComplex& y) { return abs (x) >= abs (y) ? x : (xisnan (x) ? x : y); } Complex rc_acos (double x) { return fabs (x) > 1.0 ? acos (Complex (x)) : Complex (acos (x)); } FloatComplex rc_acos (float x) { return fabsf (x) > 1.0f ? acos (FloatComplex (x)) : FloatComplex (acosf (x)); } Complex rc_acosh (double x) { return x < 1.0 ? acosh (Complex (x)) : Complex (acosh (x)); } FloatComplex rc_acosh (float x) { return x < 1.0f ? acosh (FloatComplex (x)) : FloatComplex (acoshf (x)); } Complex rc_asin (double x) { return fabs (x) > 1.0 ? asin (Complex (x)) : Complex (asin (x)); } FloatComplex rc_asin (float x) { return fabsf (x) > 1.0f ? asin (FloatComplex (x)) : FloatComplex (asinf (x)); } Complex rc_atanh (double x) { return fabs (x) > 1.0 ? atanh (Complex (x)) : Complex (atanh (x)); } FloatComplex rc_atanh (float x) { return fabsf (x) > 1.0f ? atanh (FloatComplex (x)) : FloatComplex (atanhf (x)); } Complex rc_log (double x) { const double pi = 3.14159265358979323846; return x < 0.0 ? Complex (log (-x), pi) : Complex (log (x)); } FloatComplex rc_log (float x) { const float pi = 3.14159265358979323846f; return x < 0.0f ? FloatComplex (logf (-x), pi) : FloatComplex (logf (x)); } Complex rc_log2 (double x) { const double pil2 = 4.53236014182719380962; // = pi / log(2) return x < 0.0 ? Complex (xlog2 (-x), pil2) : Complex (xlog2 (x)); } FloatComplex rc_log2 (float x) { const float pil2 = 4.53236014182719380962f; // = pi / log(2) return x < 0.0f ? FloatComplex (xlog2 (-x), pil2) : FloatComplex (xlog2 (x)); } Complex rc_log10 (double x) { const double pil10 = 1.36437635384184134748; // = pi / log(10) return x < 0.0 ? Complex (log10 (-x), pil10) : Complex (log10 (x)); } FloatComplex rc_log10 (float x) { const float pil10 = 1.36437635384184134748f; // = pi / log(10) return x < 0.0f ? FloatComplex (log10 (-x), pil10) : FloatComplex (log10f (x)); } Complex rc_sqrt (double x) { return x < 0.0 ? Complex (0.0, sqrt (-x)) : Complex (sqrt (x)); } FloatComplex rc_sqrt (float x) { return x < 0.0f ? FloatComplex (0.0f, sqrtf (-x)) : FloatComplex (sqrtf (x)); } bool xnegative_sign (double x) { return __lo_ieee_signbit (x); } bool xnegative_sign (float x) { return __lo_ieee_float_signbit (x); } // Convert X to the nearest integer value. Should not pass NaN to // this function. // Sometimes you need a large integer, but not always. octave_idx_type NINTbig (double x) { if (x > std::numeric_limits<octave_idx_type>::max ()) return std::numeric_limits<octave_idx_type>::max (); else if (x < std::numeric_limits<octave_idx_type>::min ()) return std::numeric_limits<octave_idx_type>::min (); else return static_cast<octave_idx_type> ((x > 0) ? (x + 0.5) : (x - 0.5)); } octave_idx_type NINTbig (float x) { if (x > std::numeric_limits<octave_idx_type>::max ()) return std::numeric_limits<octave_idx_type>::max (); else if (x < std::numeric_limits<octave_idx_type>::min ()) return std::numeric_limits<octave_idx_type>::min (); else return static_cast<octave_idx_type> ((x > 0) ? (x + 0.5) : (x - 0.5)); } int NINT (double x) { if (x > std::numeric_limits<int>::max ()) return std::numeric_limits<int>::max (); else if (x < std::numeric_limits<int>::min ()) return std::numeric_limits<int>::min (); else return static_cast<int> ((x > 0) ? (x + 0.5) : (x - 0.5)); } int NINT (float x) { if (x > std::numeric_limits<int>::max ()) return std::numeric_limits<int>::max (); else if (x < std::numeric_limits<int>::min ()) return std::numeric_limits<int>::min (); else return static_cast<int> ((x > 0) ? (x + 0.5) : (x - 0.5)); }