Integration of N5K winners into CCL (#1092)

* First Baby steps

* Ready for integration

* remove vestiges of angpow

* clarifying limber and non-limber

* INCOMPLETE: FFTLog restructuring to allow integration of spherical bessel functions and derivatives of bessel functions

* working version of FKEM non-limber integration with copy of N5K benchmark repo and new calculator. Needs comments in code and debugging

* working version of FKEM non-limber integration with copy of N5K benchmark repo and new calculator. Needs comments in code and debugging

* Comments in code and general debugging

* Starting to port N5K unit tests.

* missing data files

* completed test, fixed typo

* benchmark fix

* better efficiency of FKEM and splining fix

* test

* cleanup

* linted

* ccl_fftlog depreciation edits to pass unit tests

* unit test formatting

* unit test formatting

* unit test formatting

* added fftlog tests

* added fftlog tests

* added fftlog tests

* improved performance and bug fixes for FKEM implementation

* Update ccl_fftlog.i

* Update ccl_fftlog.i

* Update pyutils.py

* Update environment.yml

* Update environment.yml

* Update environment.yml

* restore rtd

* more cleanup

* 644

* more 644

* N5Krm

* no angpow

* FKEM hashing

* FKEM hashing

* FKEM hashing

* FKEM hashing

* FKEM hashing

* FKEM hashing

* FKEM hashing

* Update environment.yml

* clearer benchmark

* towards PT tests

* FKEM bug fixes for PT calculations

* FKEM bug fixes for PT calculations

* FKEM bug fixes for PT calculations

* Update environment.yml

* Update environment.yml

* Update environment.yml

* Delete src/nonlimber_matter_utils directory

* Delete compare_nonlimber_FKEM.ipynb

* privacy updates for nonlimber code

* privacy updates for nonlimber code

* privacy updates for nonlimber code

* Update ccl_fftlog.c

* consolidate FKEM helper methods into Tracers

* streamlined benchmark, removed remnant global variable, avoided division by zero

* Update tracers.py

* Update tracers.py

* Update _nonlimber_FKEM.py

---------

Co-authored-by: paulrogozenski <paulrogozenski@gmail.com>
Co-authored-by: paulrogozenski <43966955+paulrogozenski@users.noreply.github.com>
Co-authored-by: David Alonso <dam.phys@gmail.com>

CMakeLists.txt

@@ -37,9 +37,6 @@ set(TEST_SRC
     benchmarks/ccl_test_utils.c
     benchmarks/ccl_test_f2d.c
     benchmarks/ccl_test_f3d.c
-
-    # Move to python when we bring ANGPOW back
-    #benchmarks/ccl_test_angpow.c
 )
 
 
@@ -51,12 +48,6 @@ set(EXTRA_DIST_DIRS)
 include(BuildFFTW)
 include(BuildGSL)
 
-# Uncomment below when we bring ANGPOW back
-# Builds Angpow
-# TODO: the same mechanism as for CLASS could be used here to provide the
-# option to use a pre-installed version of angpow
-#include(BuildAngpow)
-
 if(("${CMAKE_C_COMPILER_ID}" MATCHES "^(Apple)+Clang$") AND (CMAKE_C_COMPILER_VERSION LESS 13) AND NOT FORCE_OPENMP)
     # Apple Clang 12 (and maybe below) have issues with OpenMP and cmake, so we don't try to find it
     # Anything else supports OpenMP
@@ -67,8 +58,8 @@ else()
 endif()
 
 # Compilation flags
-set(CMAKE_C_FLAGS_RELEASE "-O3 -fomit-frame-pointer -fno-common -fPIC -std=gnu99 -DHAVE_ANGPOW")
-set(CMAKE_C_FLAGS_DEBUG   "-O0 -g -fomit-frame-pointer -fno-common -fPIC -std=gnu99 -DHAVE_ANGPOW")
+set(CMAKE_C_FLAGS_RELEASE "-O3 -fomit-frame-pointer -fno-common -fPIC -std=gnu99")
+set(CMAKE_C_FLAGS_DEBUG   "-O0 -g -fomit-frame-pointer -fno-common -fPIC -std=gnu99")
 
 if(OpenMP_C_FOUND)
     set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${OpenMP_C_FLAGS}")
@@ -86,8 +77,8 @@ if(DEFINED ENV{CONDA_PREFIX})
 endif()
 
 # Define include and library directories for external dependencies
-include_directories(${GSL_INCLUDE_DIRS} ${FFTW_INCLUDES} ${ANGPOW_INCLUDE_DIRS})
-link_directories(${GSL_LIBRARY_DIRS} ${FFTW_LIBRARY_DIRS} ${ANGPOW_LIBRARY_DIRS})
+include_directories(${GSL_INCLUDE_DIRS} ${FFTW_INCLUDES})
+link_directories(${GSL_LIBRARY_DIRS} ${FFTW_LIBRARY_DIRS})
 # Adds path to CCL include folder
 include_directories(include)
 
@@ -98,24 +89,18 @@ include_directories(include)
 # Compiles all the source files
 add_library(objlib OBJECT ${CCL_SRC})
 # Make sure the external projects are correclty built
-# Uncomment below when we bring ANGPOW back
-#add_dependencies(objlib ANGPOW)
 if(NOT GSL_FOUND)
     add_dependencies(objlib GSL)
-# Uncomment below when we bring ANGPOW back
-#    add_dependencies(ANGPOW GSL)
 endif()
 if(NOT FFTW_FOUND)
     add_dependencies(objlib FFTW)
-# Uncomment below when we bring ANGPOW back
-#    add_dependencies(ANGPOW FFTW)
 endif()
 
 # The reason for building ccl as a shared library is that we can link it to
 # class directly, and it's not a dependency anymore
 add_library(ccl SHARED $<TARGET_OBJECTS:objlib>)
 # The generator expression $<$<BOOL:${OpenMP_C_FOUND}>:OpenMP::OpenMP_C> adds the OpenMP library if OpenMP is available
-target_link_libraries(ccl ${GSL_LIBRARIES} ${FFTW_LIBRARIES} ${CLASS_LIBRARIES} ${ANGPOW_LIBRARIES} m $<$<BOOL:${OpenMP_C_FOUND}>:OpenMP::OpenMP_C>)
+target_link_libraries(ccl ${GSL_LIBRARIES} ${FFTW_LIBRARIES} ${CLASS_LIBRARIES} m $<$<BOOL:${OpenMP_C_FOUND}>:OpenMP::OpenMP_C>)
 
 # Builds the test suite
 add_executable(check_ccl ${TEST_SRC})