[PATCH] libfortran: Fix build for targets that don't have 10byte or 16 byte floating point

[Andrew Pinski via Gcc-patches]

So the problem here is EXPAND_INTER_MACRO_16 expands to nothing if 16 byte FP 
does not
exist but we still add a comma after it and that causes a build failure.
The same is true for EXPAND_INTER_MACRO_10 too.

Committed as obvious after a bootstrap and test on x86_64-linux-gnu and 
aarch64-linux-gnu.

libgfortran/ChangeLog:

        PR libfortran/110759
        * ieee/ieee_arithmetic.F90
        (COMP_INTERFACE): Remove the comma after EXPAND_INTER_MACRO_16
        and EXPAND_INTER_MACRO_10.
        (EXPAND_INTER_MACRO_16): Add comma here if 16 byte fp exist.
        (EXPAND_INTER_MACRO_10): Likewise.
---
 libgfortran/ieee/ieee_arithmetic.F90 | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libgfortran/ieee/ieee_arithmetic.F90 
b/libgfortran/ieee/ieee_arithmetic.F90
index aa897abae39..debe40449f4 100644
--- a/libgfortran/ieee/ieee_arithmetic.F90
+++ b/libgfortran/ieee/ieee_arithmetic.F90
@@ -535,13 +535,13 @@ UNORDERED_MACRO(4,4)
   end interface
 
 #ifdef HAVE_GFC_REAL_16
-#  define EXPAND_INTER_MACRO_16(TYPE,OP) 
_gfortran_ieee_/**/TYPE/**/_/**/OP/**/_16
+#  define EXPAND_INTER_MACRO_16(TYPE,OP) 
_gfortran_ieee_/**/TYPE/**/_/**/OP/**/_16 ,
 #else
 #  define EXPAND_INTER_MACRO_16(TYPE,OP)
 #endif
 
 #ifdef HAVE_GFC_REAL_10
-#  define EXPAND_INTER_MACRO_10(TYPE,OP) 
_gfortran_ieee_/**/TYPE/**/_/**/OP/**/_10
+#  define EXPAND_INTER_MACRO_10(TYPE,OP) 
_gfortran_ieee_/**/TYPE/**/_/**/OP/**/_10 ,
 #else
 #  define EXPAND_INTER_MACRO_10(TYPE,OP)
 #endif
@@ -549,8 +549,8 @@ UNORDERED_MACRO(4,4)
 #define COMP_INTERFACE(TYPE,OP) \
   interface IEEE_/**/TYPE/**/_/**/OP ; \
     procedure \
-      EXPAND_INTER_MACRO_16(TYPE,OP) , \
-      EXPAND_INTER_MACRO_10(TYPE,OP) , \
+      EXPAND_INTER_MACRO_16(TYPE,OP) \
+      EXPAND_INTER_MACRO_10(TYPE,OP) \
       _gfortran_ieee_/**/TYPE/**/_/**/OP/**/_8 , \
       _gfortran_ieee_/**/TYPE/**/_/**/OP/**/_4 ; \
   end interface ; \
-- 
2.31.1