Mercurial > octave
view liboctave/numeric/lo-mappers.cc @ 20791:f7084eae3318
maint: Use Octave coding conventions for #if statements.
* mk-opts.pl, dialog.h, find-files-dialog.h, find-files-model.h,
file-editor-tab.h, octave-qscintilla.h, octave-txt-lexer.h, main-window.h,
octave-cmd.h, octave-dock-widget.h, octave-gui.h, thread-manager.h,
workspace-model.h, workspace-view.h, builtins.h, Cell.h, bitfcns.cc,
c-file-ptr-stream.h, cdisplay.h, comment-list.h, cutils.h, data.h, debug.h,
defaults.in.h, defun-dld.h, defun-int.h, defun.h, dirfns.h, display.h,
dynamic-ld.h, error.h, event-queue.h, file-io.h, filter.cc, getrusage.cc,
gl-render.h, gl2ps-renderer.h, graphics.in.h, gripes.h, help.h, hook-fcn.h,
input.h, jit-ir.h, jit-typeinfo.h, jit-util.h, load-path.h, load-save.h,
ls-ascii-helper.h, ls-hdf5.h, ls-mat-ascii.h, ls-mat4.h, ls-mat5.h,
ls-oct-binary.h, ls-oct-text.h, ls-utils.h, oct-errno.h, oct-fstrm.h,
oct-handle.h, oct-hdf5-types.h, oct-hdf5.h, oct-hist.h, oct-iostrm.h,
oct-lvalue.h, oct-map.h, oct-obj.h, oct-prcstrm.h, oct-procbuf.h,
oct-stdstrm.h, oct-stream.h, oct-strstrm.h, oct.h, octave-link.h, pager.h,
pr-output.h, procstream.h, profiler.h, pt-jit.h, sighandlers.cc, sighandlers.h,
siglist.h, sparse-xdiv.h, sparse-xpow.h, symtab.h, syscalls.cc, sysdep.h,
toplev.cc, toplev.h, utils.h, variables.h, workspace-element.h, xdiv.h,
xnorm.h, xpow.h, dmperm.cc, oct-qhull.h, mkbuiltins, oct-conf.in.h,
ov-base-diag.h, ov-base-int.h, ov-base-mat.h, ov-base-scalar.h,
ov-base-sparse.h, ov-base.h, ov-bool-mat.h, ov-bool-sparse.h, ov-bool.h,
ov-builtin.h, ov-cell.h, ov-ch-mat.h, ov-class.h, ov-classdef.h, ov-colon.h,
ov-complex.h, ov-cs-list.h, ov-cx-diag.h, ov-cx-mat.h, ov-cx-sparse.h,
ov-dld-fcn.h, ov-fcn-handle.h, ov-fcn-inline.h, ov-fcn.h, ov-float.h,
ov-flt-complex.h, ov-flt-cx-diag.h, ov-flt-cx-mat.h, ov-flt-re-diag.h,
ov-flt-re-mat.h, ov-int-traits.h, ov-int16.h, ov-int32.h, ov-int64.h,
ov-int8.h, ov-java.h, ov-lazy-idx.h, ov-mex-fcn.h, ov-null-mat.h, ov-perm.h,
ov-range.h, ov-re-diag.h, ov-re-mat.h, ov-re-sparse.h, ov-scalar.h,
ov-str-mat.h, ov-struct.h, ov-type-conv.h, ov-typeinfo.h, ov-uint16.h,
ov-uint32.h, ov-uint64.h, ov-uint8.h, ov-usr-fcn.h, ov.h, octave.h, ops.h,
options-usage.h, lex.h, parse.h, pt-all.h, pt-arg-list.h, pt-array-list.h,
pt-assign.h, pt-binop.h, pt-bp.h, pt-cbinop.h, pt-cell.h, pt-check.h,
pt-classdef.h, pt-cmd.h, pt-colon.h, pt-const.h, pt-decl.h, pt-eval.h,
pt-except.h, pt-exp.h, pt-fcn-handle.h, pt-funcall.h, pt-id.h, pt-idx.h,
pt-jump.h, pt-loop.h, pt-mat.h, pt-misc.h, pt-pr-code.h, pt-select.h,
pt-stmt.h, pt-unop.h, pt-walk.h, pt.h, token.h, version.in.h, Array-util.h,
Array.h, CColVector.h, CDiagMatrix.h, CMatrix.h, CNDArray.h, CRowVector.h,
CSparse.h, DiagArray2.h, MArray-decl.h, MArray-defs.h, MArray.h, MDiagArray2.h,
MSparse.h, Matrix.h, MatrixType.h, PermMatrix.h, Range.h, Sparse.h,
boolMatrix.h, boolNDArray.h, boolSparse.h, chMatrix.h, chNDArray.h,
dColVector.h, dDiagMatrix.h, dMatrix.h, dNDArray.h, dRowVector.h, dSparse.h,
dim-vector.h, fCColVector.h, fCDiagMatrix.h, fCMatrix.h, fCNDArray.h,
fCRowVector.h, fColVector.h, fDiagMatrix.h, fMatrix.h, fNDArray.h,
fRowVector.h, idx-vector.h, int16NDArray.h, int32NDArray.h, int64NDArray.h,
int8NDArray.h, intNDArray.h, uint16NDArray.h, uint32NDArray.h, uint64NDArray.h,
uint8NDArray.h, f77-fcn.h, lo-error.h, quit.h, CmplxAEPBAL.h, CmplxCHOL.h,
CmplxGEPBAL.h, CmplxHESS.h, CmplxLU.h, CmplxQR.h, CmplxQRP.h, CmplxSCHUR.h,
CmplxSVD.h, CollocWt.h, DAE.h, DAEFunc.h, DAERT.h, DAERTFunc.h, DASPK.h,
DASRT.h, DASSL.h, DET.h, EIG.h, LSODE.h, ODE.h, ODEFunc.h, ODES.h, ODESFunc.h,
Quad.h, SparseCmplxCHOL.h, SparseCmplxLU.h, SparseCmplxQR.cc, SparseCmplxQR.h,
SparseQR.h, SparsedbleCHOL.h, SparsedbleLU.h, base-aepbal.h, base-dae.h,
base-de.h, base-lu.h, base-min.h, base-qr.h, bsxfun-decl.h, bsxfun-defs.cc,
bsxfun.h, dbleAEPBAL.h, dbleCHOL.h, dbleGEPBAL.h, dbleHESS.h, dbleLU.h,
dbleQR.h, dbleQRP.h, dbleSCHUR.h, dbleSVD.h, eigs-base.cc, fCmplxAEPBAL.h,
fCmplxCHOL.h, fCmplxGEPBAL.h, fCmplxHESS.h, fCmplxLU.h, fCmplxQR.h,
fCmplxQRP.h, fCmplxSCHUR.h, fCmplxSVD.h, fEIG.h, floatAEPBAL.h, floatCHOL.h,
floatGEPBAL.h, floatHESS.h, floatLU.h, floatQR.h, floatQRP.h, floatSCHUR.h,
floatSVD.h, lo-mappers.cc, lo-mappers.h, lo-specfun.cc, lo-specfun.h,
oct-convn.h, oct-fftw.h, oct-norm.h, oct-rand.h, oct-spparms.h, randmtzig.c,
sparse-base-chol.h, sparse-base-lu.h, sparse-dmsolve.cc, Sparse-diag-op-defs.h,
Sparse-op-decls.h, Sparse-op-defs.h, Sparse-perm-op-defs.h, mk-ops.awk,
mx-base.h, mx-defs.h, mx-ext.h, mx-inlines.cc, mx-op-decl.h, mx-op-defs.h,
sparse-mk-ops.awk, dir-ops.h, file-ops.h, file-stat.h, lo-sysdep.h,
mach-info.h, oct-env.h, oct-group.h, oct-openmp.h, oct-passwd.h,
oct-syscalls.h, oct-time.cc, oct-time.h, oct-uname.h, pathlen.h, sysdir.h,
syswait.h, action-container.h, base-list.h, byte-swap.h, caseless-str.h,
cmd-edit.h, cmd-hist.h, data-conv.h, functor.h, glob-match.h, kpse.cc,
lo-array-gripes.h, lo-cutils.h, lo-ieee.h, lo-macros.h, lo-math.h, lo-regexp.h,
lo-traits.h, lo-utils.h, oct-alloc.h, oct-base64.h, oct-binmap.h, oct-cmplx.h,
oct-glob.h, oct-inttypes.h, oct-locbuf.h, oct-mutex.h, oct-refcount.h,
oct-rl-edit.h, oct-rl-hist.h, oct-shlib.h, oct-sort.h, oct-sparse.h,
pathsearch.h, singleton-cleanup.h, sparse-sort.h, sparse-util.h, statdefs.h,
str-vec.h, sun-utils.h, unwind-prot.h, url-transfer.h:
Use Octave coding conventions for #if statements.
author | Rik <rik@octave.org> |
---|---|
date | Thu, 03 Dec 2015 10:23:38 -0800 |
parents | 3fa35defe495 |
children | f7121e111991 |
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/* Copyright (C) 1996-2015 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) { return gnulib::log2 (x); } Complex xlog2 (const Complex& x) { #if defined (M_LN2) static double ln2 = M_LN2; #else static double ln2 = gnulib::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 = gnulib::log (2); #endif return exp (x * ln2); #endif } double xlog2 (double x, int& exp) { return gnulib::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); } // (double, double) -> double mappers. // complex -> complex mappers. Complex acos (const Complex& x) { static Complex i (0, 1); Complex tmp; if (imag (x) == 0.0) { // If the imaginary part of X is 0, then avoid generating an // imaginary part of -0 for the expression 1-x*x. // This effectively chooses the same phase of the branch cut as Matlab. double xr = real (x); tmp = Complex (1.0 - xr*xr); } else tmp = 1.0 - x*x; return -i * log (x + i * sqrt (tmp)); } Complex acosh (const Complex& x) { return log (x + sqrt (x + 1.0) * sqrt (x - 1.0)); } Complex asin (const Complex& x) { static Complex i (0, 1); Complex tmp; if (imag (x) == 0.0) { // If the imaginary part of X is 0, then avoid generating an // imaginary part of -0 for the expression 1-x*x. // This effectively chooses the same phase of the branch cut as Matlab. double xr = real (x); tmp = Complex (1.0 - xr*xr); } else tmp = 1.0 - x*x; return -i * log (i*x + sqrt (tmp)); } 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) { return gnulib::log2f (x); } 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 gnulib::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); } // (float, float) -> float mappers. // complex -> complex mappers. FloatComplex acos (const FloatComplex& x) { static FloatComplex i (0, 1); FloatComplex tmp; if (imag (x) == 0.0f) { // If the imaginary part of X is 0, then avoid generating an // imaginary part of -0 for the expression 1-x*x. // This effectively chooses the same phase of the branch cut as Matlab. float xr = real (x); tmp = FloatComplex (1.0f - xr*xr); } else tmp = 1.0f - x*x; return -i * log (x + i * sqrt (tmp)); } FloatComplex acosh (const FloatComplex& x) { return log (x + sqrt (x + 1.0f) * sqrt (x - 1.0f)); } FloatComplex asin (const FloatComplex& x) { static FloatComplex i (0, 1); FloatComplex tmp; if (imag (x) == 0.0f) { // If the imaginary part of X is 0, then avoid generating an // imaginary part of -0 for the expression 1-x*x. // This effectively chooses the same phase of the branch cut as Matlab. float xr = real (x); tmp = FloatComplex (1.0f - xr*xr); } else tmp = 1.0f - x*x; return -i * log (i*x + sqrt (tmp)); } FloatComplex asinh (const FloatComplex& x) { return log (x + sqrt (x*x + 1.0f)); } FloatComplex atan (const FloatComplex& x) { static FloatComplex i (0, 1); return i * log ((i + x) / (i - x)) / 2.0f; } FloatComplex atanh (const FloatComplex& x) { return log ((1.0f + x) / (1.0f - x)) / 2.0f; } // 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 (gnulib::log (-x), pi) : Complex (gnulib::log (x)); } FloatComplex rc_log (float x) { const float pi = 3.14159265358979323846f; return (x < 0.0f ? FloatComplex (gnulib::logf (-x), pi) : FloatComplex (gnulib::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)); }