add C99-conformant nan, nanf, nanl for vax. always return zero,

since its fp does not have distinguished values for qnans.  tested
by naddy@;  fixes libnova.  ok theo

2 files changed, 31 insertions, 2 deletions

diff --git a/lib/libm/Makefile b/lib/libm/Makefile
index 375eed02165..5912a8291bf 100644
--- a/lib/libm/Makefile
+++ b/lib/libm/Makefile
@@ -1,4 +1,4 @@
-#  $OpenBSD: Makefile,v 1.62 2008/12/12 19:30:17 martynas Exp $
+#  $OpenBSD: Makefile,v 1.63 2009/03/28 16:16:30 martynas Exp $
 #  $NetBSD: Makefile,v 1.28 1995/11/20 22:06:19 jtc Exp $
 #
 #  @(#)Makefile 5.1beta 93/09/24 
@@ -117,7 +117,7 @@ NOIEEE_SRCS = n_acosh.c n_argred.c n_asincos.c n_asinh.c n_atan.c \
 	n_erf.c n_exp.c n_exp__E.c n_expm1.c n_fdim.c n_floor.c \
 	n_fmax.c n_fmaxf.c n_fmin.c n_fminf.c n_fmod.c n_hypot.c \
 	n_infnan.c n_j0.c n_j1.c n_jn.c n_lgamma.c n_log.c n_log10.c \
-	n_log1p.c n_log__L.c n_pow.c n_round.c n_sincos.c n_sinh.c \
+	n_log1p.c n_log__L.c n_nan.c n_pow.c n_round.c n_sincos.c n_sinh.c \
 	n_sqrt.c n_support.c n_tan.c n_tanh.c n_tgamma.c
 
 # OpenBSD's C library supplies these functions:
diff --git a/lib/libm/noieee_src/n_nan.c b/lib/libm/noieee_src/n_nan.c
new file mode 100644
index 00000000000..3b0cb57a4ba
--- /dev/null
+++ b/lib/libm/noieee_src/n_nan.c
@@ -0,0 +1,29 @@
+/*	$OpenBSD: n_nan.c,v 1.1 2009/03/28 16:16:30 martynas Exp $	*/
+
+/*
+ * Written by Martynas Venckus.  Public domain
+ */
+
+#include <math.h>
+
+/* ARGSUSED */
+double
+nan(const char *tagp)
+{
+	return (0);
+}
+
+/* ARGSUSED */
+float
+nanf(const char *tagp)
+{
+	return (0);
+}
+
+/* ARGSUSED */
+long double
+nanl(const char *tagp)
+{
+	return (0);
+}
+