Refactor: Move Stochastic_Chebyshev to a math lib

Chebyshev now is a template class and is able to treate float numbers.

Author: Qianruipku

source/Makefile.Objects

@@ -59,8 +59,8 @@ unk_overlap_pw.o \
 berryphase.o \
 sto_iter.o\
 sto_wf.o\
+sto_func.o\
 sto_hchi.o\
-sto_che.o\
 sto_forces.o\
 sto_stress_pw.o
 
@@ -81,6 +81,7 @@ math_integral.o\
 math_ylmreal.o\
 mathzone_add1.o\
 math_bspline.o\
+math_chebyshev.o\
 integral.o \
 polint.o \
 sph_bessel.o \

source/module_base/CMakeLists.txt

@@ -16,7 +16,8 @@ add_library(
     math_polyint.cpp
     math_sphbes.cpp
     math_ylmreal.cpp
-	  math_bspline.cpp
+	math_bspline.cpp
+    math_chebyshev.cpp
     mathzone.cpp
     mathzone_add1.cpp
     matrix.cpp