consistently use float arithmetic in axis_to_quat

By avoiding mixing doubles and floats, we avoid ever down-converting from a
float to a double and losing precision. Squashes some -Wfloat-conversion
warnings.

diff --git a/cmd/smyrna/trackball.c b/cmd/smyrna/trackball.c
index c160023c8e9f8d55dde9a60e845c4dfb2c3e415f..a49ad5cce3b82bd445283b9b80d9906fccd61e3b 100644 (file)
--- a/cmd/smyrna/trackball.c
+++ b/cmd/smyrna/trackball.c
@@ -195,8 +195,8 @@ void axis_to_quat(float a[3], float phi, float q[4])
 {
     vnormal(a);
     vcopy(a, q);
-    vscale(q, sin(phi / 2.0));
-    q[3] = cos(phi / 2.0);
+    vscale(q, sinf(phi / 2.0f));
+    q[3] = cosf(phi / 2.0f);
 }
 
 /*