add -funsafe-math-optimizations

Makefile

@@ -32,7 +32,7 @@ LIBSOURCES =  fft_fftw.c libcsdr_wrapper.c
 #SOURCES = csdr.c $(LIBSOURCES)
 cpufeature = $(if $(findstring $(1),$(shell cat /proc/cpuinfo)),$(2))
 PARAMS_SSE = $(call cpufeature,sse,-msse) $(call cpufeature,sse2,-msse2) $(call cpufeature,sse3,-msse3) $(call cpufeature,sse4,-msse4) $(call cpufeature,sse4_1,-msse4.1) $(call cpufeature,sse4_2,-msse4.2) -mfpmath=sse 
-PARAMS_NEON = -fshort-double -mfloat-abi=softfp -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mvectorize-with-neon-quad -Wformat=0
+PARAMS_NEON = -fshort-double -mfloat-abi=hard -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mvectorize-with-neon-quad -funsafe-math-optimizations -Wformat=0
 PARAMS_SIMD = $(if $(call cpufeature,sse,dummy-text),$(PARAMS_SSE),$(PARAMS_NEON))
 PARAMS_LOOPVECT = -O3 -ffast-math -fdump-tree-vect-details -dumpbase dumpvect
 PARAMS_LIBS = -g -lm -lfftw3f -DUSE_FFTW -DLIBCSDR_GPL