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add least square polynomial interpolation and tcl8.6 support, docs update
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‎README.md

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![Static Badge](https://img.shields.io/badge/license-GPL3-blue)
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![Static Badge](https://img.shields.io/badge/Tcl_version-9.0-blue)
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![Static Badge](https://img.shields.io/badge/Tcl_version-8.6.15-blue)
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![Static Badge](https://img.shields.io/badge/Kubuntu_24.04-pass-green)
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![Static Badge](https://img.shields.io/badge/Windows_11-pass-green)
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# Content
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This package provides tcl wrapper for interpolation procedures.
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For building you need:
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- [SWIG of version 4.3](https://www.swig.org/download.html)
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- [Tcl9](https://www.tcl.tk/software/tcltk/9.0.html)
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- [Tcl9](https://www.tcl.tk/software/tcltk/9.0.html) or [Tcl8.6.15](https://www.tcl.tk/software/tcltk/8.6.html)
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- [gcc compiler](https://gcc.gnu.org/)
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- [make tool](https://www.gnu.org/software/make/)
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- [autoconf tool](https://www.gnu.org/software/autoconf/)
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make
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sudo make install
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```
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If you have different versions of Tcl on the same machine, you can set the path to this version with `-with-tcl=path`
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flag to configure script.
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For Windows build it is strongly recommended to use [MSYS64 UCRT64 environment](https://www.msys2.org/), the above
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steps are identical if you run it from UCRT64 shell. After installing the package, you can move tclinterp package
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# Supported platforms
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I've tested it on:
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- Kubuntu 24.04 with Tcl9
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- Kubuntu 24.04 with Tcl 9 and Tcl 8.6.15
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- Windows 11 in MSYS64 UCRT64 environment with Tcl9
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# Documentation

‎autom4te.cache/output.0

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#-----------------------------------------------------------------------
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vars="interp.c tclinterp_wrap.c"
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vars="interp.c tclinterp_wrap.c spline.c"
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for i in $vars; do
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case $i in
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\$*)
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vars="generic/interp.h"
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vars="generic/interp.h generic/spline.h"
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for i in $vars; do
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# check for existence, be strict because it is installed
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if test ! -f "${srcdir}/$i" ; then

‎autom4te.cache/requests

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'configure.ac'
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],
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{
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'AM_EXTRA_RECURSIVE_TARGETS' => 1,
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'AM_PROG_CXX_C_O' => 1,
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'AH_OUTPUT' => 1,
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'include' => 1,
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'AC_SUBST' => 1,
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'AM_POT_TOOLS' => 1,
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'AC_CONFIG_LIBOBJ_DIR' => 1,
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'AM_MAINTAINER_MODE' => 1,
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'AM_GNU_GETTEXT' => 1,
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'LT_SUPPORTED_TAG' => 1,
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'AM_GNU_GETTEXT_INTL_SUBDIR' => 1,
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'LT_INIT' => 1,
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'AM_PROG_AR' => 1,
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'AM_PROG_MKDIR_P' => 1,
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'AC_SUBST_TRACE' => 1,
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'AM_CONDITIONAL' => 1,
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'AM_PROG_FC_C_O' => 1,
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'AC_CANONICAL_SYSTEM' => 1,
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'AM_PROG_CC_C_O' => 1,
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'IT_PROG_INTLTOOL' => 1,
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'_AM_COND_IF' => 1,
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'_AM_COND_ENDIF' => 1,
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'm4_sinclude' => 1,
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'AC_CONFIG_HEADERS' => 1,
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'AC_CONFIG_AUX_DIR' => 1,
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'AM_AUTOMAKE_VERSION' => 1,
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'_LT_AC_TAGCONFIG' => 1,
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'AC_REQUIRE_AUX_FILE' => 1,
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'AM_NLS' => 1,
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'AM_PROG_F77_C_O' => 1,
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'AC_CANONICAL_SYSTEM' => 1,
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'AM_INIT_AUTOMAKE' => 1,
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'AM_EXTRA_RECURSIVE_TARGETS' => 1,
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'AM_PROG_FC_C_O' => 1,
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'AM_SILENT_RULES' => 1,
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'AC_CONFIG_MACRO_DIR_TRACE' => 1,
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'AC_LIBSOURCE' => 1,
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'AC_CANONICAL_BUILD' => 1,
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'AM_PROG_MKDIR_P' => 1,
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'AC_CONFIG_HEADERS' => 1,
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'LT_SUPPORTED_TAG' => 1,
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'AM_XGETTEXT_OPTION' => 1,
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'AC_SUBST_TRACE' => 1,
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'_AM_MAKEFILE_INCLUDE' => 1,
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'AC_FC_SRCEXT' => 1,
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'AC_CONFIG_FILES' => 1,
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'AC_CANONICAL_TARGET' => 1,
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'AC_CONFIG_SUBDIRS' => 1,
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'AC_PROG_LIBTOOL' => 1,
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'LT_CONFIG_LTDL_DIR' => 1,
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'AC_CONFIG_LINKS' => 1,
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'AC_FC_FREEFORM' => 1,
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'_AM_COND_ENDIF' => 1,
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'AC_FC_PP_SRCEXT' => 1,
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'AM_ENABLE_MULTILIB' => 1,
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'AC_CANONICAL_BUILD' => 1,
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'AM_PROG_MOC' => 1,
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'AC_REQUIRE_AUX_FILE' => 1,
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'AM_PROG_LIBTOOL' => 1,
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'_AM_COND_ELSE' => 1,
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'AM_PATH_GUILE' => 1,
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'AC_CONFIG_LIBOBJ_DIR' => 1,
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'LT_INIT' => 1,
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'm4_pattern_forbid' => 1,
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'AC_FC_PP_DEFINE' => 1,
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'm4_sinclude' => 1,
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'GTK_DOC_CHECK' => 1,
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'AC_PROG_LIBTOOL' => 1,
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'_LT_AC_TAGCONFIG' => 1,
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'_m4_warn' => 1,
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'm4_include' => 1,
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'AC_CANONICAL_TARGET' => 1,
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'AC_DEFINE_TRACE_LITERAL' => 1,
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'AM_PROG_CC_C_O' => 1,
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'AM_MAKEFILE_INCLUDE' => 1,
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'AM_NLS' => 1,
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'AC_CONFIG_LINKS' => 1,
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'sinclude' => 1,
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'include' => 1,
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'm4_pattern_allow' => 1,
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'AM_PROG_AR' => 1,
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'AM_ENABLE_MULTILIB' => 1,
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'AC_FC_PP_SRCEXT' => 1,
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'AC_CANONICAL_HOST' => 1,
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'IT_PROG_INTLTOOL' => 1,
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'AM_INIT_AUTOMAKE' => 1,
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'AM_SILENT_RULES' => 1,
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'AC_CONFIG_MACRO_DIR_TRACE' => 1,
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'AC_SUBST' => 1,
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'_AM_COND_ELSE' => 1,
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'AM_POT_TOOLS' => 1,
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'AM_MAINTAINER_MODE' => 1,
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'AM_GNU_GETTEXT' => 1,
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'_AM_SUBST_NOTMAKE' => 1,
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'm4_pattern_forbid' => 1,
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'AM_PROG_MOC' => 1,
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'AM_MAKEFILE_INCLUDE' => 1,
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'AC_DEFINE_TRACE_LITERAL' => 1,
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'LT_CONFIG_LTDL_DIR' => 1,
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'AC_INIT' => 1,
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'AM_GNU_GETTEXT_INTL_SUBDIR' => 1,
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'm4_include' => 1
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'AM_XGETTEXT_OPTION' => 1,
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'_AM_MAKEFILE_INCLUDE' => 1,
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'AM_PROG_F77_C_O' => 1,
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'AC_FC_FREEFORM' => 1,
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'AM_AUTOMAKE_VERSION' => 1,
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'AC_CANONICAL_HOST' => 1,
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'AH_OUTPUT' => 1,
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'AM_PROG_CXX_C_O' => 1,
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'AC_FC_SRCEXT' => 1,
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'GTK_DOC_CHECK' => 1,
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'm4_pattern_allow' => 1
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}
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], 'Autom4te::Request' )
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);

‎configure

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#-----------------------------------------------------------------------
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vars="interp.c tclinterp_wrap.c"
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vars="interp.c tclinterp_wrap.c spline.c"
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for i in $vars; do
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case $i in
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\$*)
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vars="generic/interp.h"
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vars="generic/interp.h generic/spline.h"
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for i in $vars; do
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# check for existence, be strict because it is installed
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if test ! -f "${srcdir}/$i" ; then

‎configure.ac

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# and PKG_TCL_SOURCES.
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#-----------------------------------------------------------------------
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TEA_ADD_SOURCES([interp.c tclinterp_wrap.c])
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TEA_ADD_HEADERS([generic/interp.h])
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TEA_ADD_SOURCES([interp.c tclinterp_wrap.c spline.c])
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TEA_ADD_HEADERS([generic/interp.h generic/spline.h])
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TEA_ADD_INCLUDES([])
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TEA_ADD_LIBS([])
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TEA_ADD_CFLAGS([])

‎docs/index-docindex.html

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<ul id='indexUL'>
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<li class='ruff-tip'><a href='index-tclinterp.html#::tclinterp::array2list'>array2list</a><span class='ruff-tiptext'><pre>&lt;span class='ruff_cmd'&gt;array2list&lt;/span&gt; &lt;span class='ruff_arg'&gt;<b><font color=#923B23>array</font></b> length&lt;/span&gt;</pre>Convert doubleArray to the list
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</span> ::tclinterp</li><li class='ruff-tip'><a href='index-tclinterp.html#::tclinterp::createArray'>createArray</a><span class='ruff-tiptext'><pre>&lt;span class='ruff_cmd'&gt;createArray&lt;/span&gt; &lt;span class='ruff_arg'&gt;<b><font color=#923B23>list</font></b>&lt;/span&gt;</pre>Create doubleArray from the list
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</span> ::tclinterp</li><li class='ruff-tip'><a href='index-tclinterp.html#::tclinterp::deleteArrays'>deleteArrays</a><span class='ruff-tiptext'><pre>&lt;span class='ruff_cmd'&gt;deleteArrays&lt;/span&gt; &lt;span class='ruff_arg'&gt;?args?&lt;/span&gt;</pre>Convert doubleArray to the list
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</span> ::tclinterp</li><li class='ruff-tip'><a href='index-tclinterp.html#::tclinterp::interpLagr1d'>interpLagr1d</a><span class='ruff-tiptext'><pre>&lt;span class='ruff_cmd'&gt;interpLagr1d&lt;/span&gt; &lt;span class='ruff_arg'&gt;?args?&lt;/span&gt;</pre>Does Lagrange polynomial one-dimensional interpolation.
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</span> ::tclinterp</li><li class='ruff-tip'><a href='index-tclinterp.html#::tclinterp::interpLeast1d'>interpLeast1d</a><span class='ruff-tiptext'><pre>&lt;span class='ruff_cmd'&gt;interpLeast1d&lt;/span&gt; &lt;span class='ruff_arg'&gt;?args?&lt;/span&gt;</pre>Does least squares polynomial one-dimensional interpolation.
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</span> ::tclinterp</li><li class='ruff-tip'><a href='index-tclinterp.html#::tclinterp::interpLin1d'>interpLin1d</a><span class='ruff-tiptext'><pre>&lt;span class='ruff_cmd'&gt;interpLin1d&lt;/span&gt; &lt;span class='ruff_arg'&gt;?args?&lt;/span&gt;</pre>Does linear one-dimensional interpolation.
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</span> ::tclinterp</li><li class='ruff-tip'><a href='index-tclinterp.html#::tclinterp::interpNear1d'>interpNear1d</a><span class='ruff-tiptext'><pre>&lt;span class='ruff_cmd'&gt;interpNear1d&lt;/span&gt; &lt;span class='ruff_arg'&gt;?args?&lt;/span&gt;</pre>Does nearest one-dimensional interpolation.
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</span> ::tclinterp</li>

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