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@@ -0,0 +1,40 @@
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+From 03bf456cb5b65ff7cfabfab3758ca8f3c6816556 Mon Sep 17 00:00:00 2001
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+From: Cyril Hrubis <chrubis@suse.cz>
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+Date: Thu, 4 Sep 2014 11:28:55 +0200
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+Subject: [PATCH] realtime: Fix exp10 check.
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+
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+The parameter to exp10() function was constant and because of that it
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+was substituted by a constant at the compile time.
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+
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+This patch passes volatile float as the parameter and also adds -lm to
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+the LIBS which is needed to link the test.
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+
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+Reported-by: Waldemar Brodkorb <wbx@openadk.org>
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+Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
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+---
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+ testcases/realtime/m4/ltp-exp10.m4 | 6 +++++-
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+ 1 file changed, 5 insertions(+), 1 deletion(-)
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+
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+diff --git a/testcases/realtime/m4/ltp-exp10.m4 b/testcases/realtime/m4/ltp-exp10.m4
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+index 4fe7091..84a3d9b 100644
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+--- a/testcases/realtime/m4/ltp-exp10.m4
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++++ b/testcases/realtime/m4/ltp-exp10.m4
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+@@ -24,10 +24,14 @@ AC_DEFUN([LTP_CHECK_EXP10],[
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+ AH_TEMPLATE(HAVE_EXP10,
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+ [Define to 1 if you have 'exp10' function.])
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+ AC_MSG_CHECKING([for exp10])
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++backup_ldlibs="$LIBS"
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++LIBS+=" -lm"
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+ AC_TRY_LINK([#define _GNU_SOURCE
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+ #include <math.h>],
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+ [
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+- exp10(0.00);
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++ volatile float val;
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++ exp10(val);
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+ ],
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+ AC_DEFINE(HAVE_EXP10) AC_MSG_RESULT(yes), AC_MSG_RESULT(no))
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++LIBS="$backup_ldlibs"
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+ ])
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+--
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+1.8.5.5
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+
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Waldemar Brodkorb