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-rw-r--r--gnuradio-runtime/lib/math/random.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnuradio-runtime/lib/math/random.cc b/gnuradio-runtime/lib/math/random.cc
index 401ba89735..5ebe174914 100644
--- a/gnuradio-runtime/lib/math/random.cc
+++ b/gnuradio-runtime/lib/math/random.cc
@@ -151,7 +151,7 @@ namespace gr {
float
random::impulse(float factor = 5)
{
- float z = -M_SQRT2 * logf(ran1());
+ float z = -GR_M_SQRT2 * logf(ran1());
if(fabsf(z) <= factor)
return 0.0;
else