type: Rename matrix_3x3_t to mat33_fp_t

Naming of many vector types and matrix types are not clear enough.
For example, we have:
  vector_3_t, which is a vector of three int.
  vec3_t, which is a vector of three float.
  size4_t, which is a vector of four size_t.
  mat33_t, which is a 3x3 matrix of float.
  matrix_3x3_t, which is a 3x3 matrix of fixed point.
Besides, we have types like int8_t, uint16_t types.

To clearly distinguished types, the CL propose to,

For vector types, naming should be `$type + 'v' + $num + '_t'`:
  vector_3_t becomes intv3_t
  vec3_t becomes floatv3_t
  vector 4 of uint16_t becomes uint16v4_t (which doesn't exist yet)

For matrix types, naming should be `mat$N$N_` + $type + '_t', where $N is the
matrix size:
  matrix_3x3_t becomes mat33_fp_t  # fp: fixed point
  mat33_t becomes mat33_float_t

TEST=make buildall -j
BUG=b:114662791

Change-Id: I51d88d44252184e4b7b3564236833b0b892edc39
Signed-off-by: Yilun Lin <yllin@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1215449
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/motion_lid.h b/include/motion_lid.h
index 6ce299c0e5..110d614811 100644
--- a/include/motion_lid.h
+++ b/include/motion_lid.h
@@ -17,13 +17,13 @@
  */
 struct accel_orientation {
 	/* Rotation matrix to rotate positive 90 degrees around the hinge. */
-	matrix_3x3_t rot_hinge_90;
+	mat33_fp_t rot_hinge_90;
 
 	/*
 	 * Rotation matrix to rotate 180 degrees around the hinge. The value
 	 * here should be rot_hinge_90 ^ 2.
 	 */
-	matrix_3x3_t rot_hinge_180;
+	mat33_fp_t rot_hinge_180;
 
 	/* Vector pointing along hinge axis. */
 	intv3_t hinge_axis;