altos: Add sinf to math code

Needed for the quaternion gyro tracking code

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/math/math.h b/src/math/math.h
index c62f583d..fd543bc2 100644
--- a/src/math/math.h
+++ b/src/math/math.h
@@ -22,6 +22,8 @@ float acosf(float x);
 
 float cosf(float x);
 
+float sinf(float x);
+
 float sqrtf(float x);
 
 float fabsf(float x);