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Diffstat (limited to 'nuttx/lib/math/lib_atanl.c')
-rw-r--r--nuttx/lib/math/lib_atanl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/nuttx/lib/math/lib_atanl.c b/nuttx/lib/math/lib_atanl.c
index c8fa239f9..0fa203098 100644
--- a/nuttx/lib/math/lib_atanl.c
+++ b/nuttx/lib/math/lib_atanl.c
@@ -40,7 +40,7 @@
* Public Functions
************************************************************************/
-#if CONFIG_HAVE_LONG_DOUBLE
+#ifdef CONFIG_HAVE_LONG_DOUBLE
long double atanl(long double x)
{
return asinl(x / sqrtl(x * x + 1));