Another workaround is needed on AIX, to fix these compilation errors:
With gcc:
../../gltests/test-math.c:68:13: error: initializer element is not constant
double hd = HUGE_VAL;
^~~~~~~~
../../gltests/test-math.c:71:18: error: initializer element is not constant
long double hl = HUGE_VALL;
^~~~~~~~~
With xlc:
"../../gltests/test-math.c", line 68.13: 1506-221 (S) Initializer must be a
valid constant expression.
"../../gltests/test-math.c", line 71.18: 1506-221 (S) Initializer must be a
valid constant expression.
2024-08-05 Bruno Haible <br...@clisp.org>
math: Fix HUGE_VAL and HUGE_VALL on AIX.
* lib/math.in.h (HUGE_VAL, HUGE_VALL): Override on AIX.
* doc/posix-headers/math.texi: Mention this AIX problem.
diff --git a/doc/posix-headers/math.texi b/doc/posix-headers/math.texi
index 92b4d1b172..6f07b1e58c 100644
--- a/doc/posix-headers/math.texi
+++ b/doc/posix-headers/math.texi
@@ -45,7 +45,7 @@
@item
@code{HUGE_VAL}, @code{HUGE_VALF}, @code{HUGE_VALL} are not compile time
constants on some platforms:
-FreeBSD 5.2.
+FreeBSD 5.2, AIX 7.1.
@item
@code{INFINITY} and @code{NAN} are not compile time constants
diff --git a/lib/math.in.h b/lib/math.in.h
index 7730efb7f5..7b1302d883 100644
--- a/lib/math.in.h
+++ b/lib/math.in.h
@@ -223,7 +223,7 @@ _NaN ()
#endif
/* HUGE_VAL is a 'double' Infinity. */
-#if !defined HUGE_VAL || (defined __FreeBSD__ && __FreeBSD__ < 6)
+#if !defined HUGE_VAL || (defined __FreeBSD__ && __FreeBSD__ < 6) || defined
_AIX
# undef HUGE_VAL
# if defined _MSC_VER
/* The Microsoft MSVC 9 compiler chokes on the expression 1.0 / 0.0. */
@@ -236,7 +236,7 @@ _NaN ()
#endif
/* HUGE_VALL is a 'long double' Infinity. */
-#if !defined HUGE_VALL || (defined __FreeBSD__ && __FreeBSD__ < 6)
+#if !defined HUGE_VALL || (defined __FreeBSD__ && __FreeBSD__ < 6) || defined
_AIX
# undef HUGE_VALL
# if defined _MSC_VER
/* The Microsoft MSVC 9 compiler chokes on the expression 1.0L / 0.0L. */
