type: Rename size3_t to sizev3_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: I4fea3bb2c1781a91f1c12ad66f25382cc0be3611
Signed-off-by: Yilun Lin <yllin@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1215446
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>

2 files changed, 2 insertions, 2 deletions

diff --git a/common/mat33.c b/common/mat33.c
index 17938c0c4f..d5d062b7ce 100644
--- a/common/mat33.c
+++ b/common/mat33.c
@@ -58,7 +58,7 @@ void mat33_swap_rows(mat33_t A, const size_t i, const size_t j)
 void mat33_get_eigenbasis(mat33_t S, floatv3_t e_vals, mat33_t e_vecs)
 {
 	const size_t N = 3;
-	size3_t ind;
+	sizev3_t ind;
 	size_t i, j, k, l, m;
 
 	for (k = 0; k < N; ++k) {
diff --git a/include/mat33.h b/include/mat33.h
index 75c0d79366..5dd77cbdb9 100644
--- a/include/mat33.h
+++ b/include/mat33.h
@@ -11,7 +11,7 @@
 #include "util.h"
 
 typedef float mat33_t[3][3];
-typedef size_t size3_t[3];
+typedef size_t sizev3_t[3];
 
 void init_zero_matrix(mat33_t A);
 void init_diagonal_matrix(mat33_t A, float x);