replaced huge 2d twiddle arrays by smaller 1d arrays. Now it uses very low memory

C/Makefile

@@ -1,5 +1,14 @@
-all:
-	gcc FP_math.c -o FP_math -lm
+SRCS := FP_math.c FFT_FP_realisation.c
+OBJS := $(SRCS:.c=.o)
+TARGET := FP_math
+
+all: $(TARGET)
+
+$(TARGET): $(OBJS)
+	gcc $(OBJS) -o $@ -lm
+
+%.o: %.c
+	gcc -c $< -o $@
 
 clean:
-	-rm FP_math
+	-rm -f $(TARGET) $(OBJS)