added comments

Author: HaraldHofstaetter

Makefile

@@ -1,12 +1,24 @@
 all: libfloat128.so
 
+
+
+#location of mpfr.h:
 INCMPFR =  $(HOME)/LibDownloads/mpfr-3.1.3/src
+
+#location of mparam.h:
 INCMPARAM =  $(HOME)/LibDownloads/mpfr-3.1.3/src/x86_64/core2
+
+#location of gmp.h:
 INCGMP = $(HOME)/LibDownloads/gmp-6.1.0/
 
+#location of shared quadmath library:
 LIBQUADMATH = /usr/lib/x86_64-linux-gnu/libquadmath.so.0
+
+#location of shared mpfr library used by Julia:
 LIBMPFR =  /usr/lib/x86_64-linux-gnu/libmpfr.so.4
 
+
+
 float128.o: float128.c
 	gcc  -O3 -fPIC -c -o float128.o float128.c 
 
@@ -22,7 +34,7 @@ get_float128.o: get_float128.c
 
 libfloat128.so: float128.o set_float128.o get_float128.o
 	gcc -shared -o libfloat128.so  float128.o  set_float128.o get_float128.o \
-                       $(LIBMPFR) $(LIBQUADMATH)  
+            $(LIBMPFR) $(LIBQUADMATH)