From af35d3b9d46a6bf60331218e9cd75c9d48d57e12 Mon Sep 17 00:00:00 2001
From: Nick Kreeger <kreeger@google.com>
Date: Thu, 10 Oct 2019 16:58:12 -0700
Subject: [PATCH] Add M_PI #define for platforms that do not have that defined.

PiperOrigin-RevId: 274069217
---
 tensorflow/lite/experimental/microfrontend/lib/window_util.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tensorflow/lite/experimental/microfrontend/lib/window_util.c b/tensorflow/lite/experimental/microfrontend/lib/window_util.c
index 8424ee6f8c0..3e544f5dd38 100644
--- a/tensorflow/lite/experimental/microfrontend/lib/window_util.c
+++ b/tensorflow/lite/experimental/microfrontend/lib/window_util.c
@@ -21,6 +21,11 @@ limitations under the License.
 #include <stdlib.h>
 #include <string.h>
 
+// Some platforms don't have M_PI
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
 void WindowFillConfigWithDefaults(struct WindowConfig* config) {
   config->size_ms = 25;
   config->step_size_ms = 10;