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[PULL,v3,27/38] test-coroutine: avoid overflow on 32-bit systems

Message ID 1421156896-11599-28-git-send-email-stefanha@redhat.com
State New
Headers show

Commit Message

Stefan Hajnoczi Jan. 13, 2015, 1:48 p.m. UTC 
From: Paolo Bonzini <pbonzini@redhat.com>

unsigned long is not large enough to represent 1000000000 * duration there.
Just use floating point.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1417518350-6167-4-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 tests/test-coroutine.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/tests/test-coroutine.c b/tests/test-coroutine.c
index e22fae1..27d1b6f 100644
--- a/tests/test-coroutine.c
+++ b/tests/test-coroutine.c
@@ -337,7 +337,7 @@  static void perf_cost(void)
                    "%luns per coroutine",
                    maxcycles,
                    duration, ops,
-                   (unsigned long)(1000000000 * duration) / maxcycles);
+                   (unsigned long)(1000000000.0 * duration / maxcycles));
 }
 
 int main(int argc, char **argv)