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Add cmake install + MSVC dll support
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CMakeLists.txt
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CMakeLists.txt
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add_library(kissfft
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kiss_fft.c)
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add_library(kissfft::kissfft ALIAS kissfft)
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target_include_directories(kissfft PUBLIC
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
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$<INSTALL_INTERFACE:.>)
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set_target_properties(kissfft PROPERTIES
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DEFINE_SYMBOL KISS_FFT_BUILD)
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if(BUILD_SHARED_LIBS)
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target_compile_definitions(kissfft PUBLIC KISS_FFT_SHARED)
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set_target_properties(kissfft PROPERTIES
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C_VISIBILITY_PRESET hidden)
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endif()
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option(KISSFFT_INSTALL "Enable kissfft install" ON)
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if (KISSFFT_INSTALL)
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include(GNUInstallDirs)
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install(TARGETS kissfft EXPORT kissfft
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ARCHIVE DESTINATION "${CMAKE_INSTALL_BINDIR}"
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LIBRARY DESTINATION "${CMAKE_INSTALL_BINDIR}"
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RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
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install(FILES "kiss_fft.h" DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
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install(EXPORT kissfft DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
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NAMESPACE "kissfft::"
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FILE "${PROJECT_NAME}-config.cmake")
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endif()
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kiss_fft.h
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kiss_fft.h
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#include <math.h>
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#include <string.h>
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// Define KISS_FFT_SHARED macro to properly export symbols
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#ifdef KISS_FFT_SHARED
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# ifdef _WIN32
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# ifdef KISS_FFT_BUILD
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# define KISS_FFT_API __declspec(dllexport)
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# else
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# define KISS_FFT_API __declspec(dllimport)
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# endif
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# else
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# define KISS_FFT_API __attribute__ ((visibility ("default")))
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# endif
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#else
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# define KISS_FFT_API
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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* buffer size in *lenmem.
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* */
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kiss_fft_cfg kiss_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem);
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kiss_fft_cfg KISS_FFT_API kiss_fft_alloc(int nfft,int inverse_fft,void * mem,size_t * lenmem);
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/*
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* kiss_fft(cfg,in_out_buf)
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* Note that each element is complex and can be accessed like
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f[k].r and f[k].i
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* */
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void kiss_fft(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout);
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void KISS_FFT_API kiss_fft(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout);
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/*
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A more generic version of the above function. It reads its input from every Nth sample.
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* */
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void kiss_fft_stride(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout,int fin_stride);
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void KISS_FFT_API kiss_fft_stride(kiss_fft_cfg cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout,int fin_stride);
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/* If kiss_fft_alloc allocated a buffer, it is one contiguous
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buffer and can be simply free()d when no longer needed*/
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Cleans up some memory that gets managed internally. Not necessary to call, but it might clean up
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your compiler output to call this before you exit.
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*/
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void kiss_fft_cleanup(void);
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void KISS_FFT_API kiss_fft_cleanup(void);
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/*
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* Returns the smallest integer k, such that k>=n and k has only "fast" factors (2,3,5)
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*/
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int kiss_fft_next_fast_size(int n);
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int KISS_FFT_API kiss_fft_next_fast_size(int n);
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/* for real ffts, we need an even size */
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#define kiss_fftr_next_fast_size_real(n) \