type: Rename mat44_t to mat44_float_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: I188305fc2f4fcff6ec4343f68e1aa1d2d185f6cf
Signed-off-by: Yilun Lin <yllin@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1215448
Commit-Ready: Yilun Lin <yllin@chromium.org>
Tested-by: Yilun Lin <yllin@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>

4 files changed, 11 insertions, 11 deletions

diff --git a/common/mag_cal.c b/common/mag_cal.c
index 160530c2b9..6e5a48b6b1 100644
--- a/common/mag_cal.c
+++ b/common/mag_cal.c
@@ -107,9 +107,9 @@ static int moc_fit(struct mag_cal_t *moc, floatv3_t bias, float *radius)
 	moc->acc_w[Z] *= -1;
 	moc->acc_w[W] *= -1;
 
-	mat44_decompose_lup(moc->acc, pivot);
+	mat44_float_decompose_lup(moc->acc, pivot);
 
-	mat44_solve(moc->acc, out, moc->acc_w, pivot);
+	mat44_float_solve(moc->acc, out, moc->acc_w, pivot);
 
 	/*
 	 * spherei is defined by:
diff --git a/common/mat44.c b/common/mat44.c
index 36ed487841..2ca3b69c32 100644
--- a/common/mat44.c
+++ b/common/mat44.c
@@ -10,7 +10,7 @@
 
 #define K_EPSILON 1E-5f
 
-void mat44_decompose_lup(mat44_t LU, sizev4_t pivot)
+void mat44_float_decompose_lup(mat44_float_t LU, sizev4_t pivot)
 {
 	const size_t N = 4;
 	size_t i, j, k;
@@ -26,7 +26,7 @@ void mat44_decompose_lup(mat44_t LU, sizev4_t pivot)
 		}
 
 		if (pivot[k] != k)
-			mat44_swap_rows(LU, k, pivot[k]);
+			mat44_float_swap_rows(LU, k, pivot[k]);
 
 		if (fabsf(LU[k][k]) < K_EPSILON)
 			continue;
@@ -40,7 +40,7 @@ void mat44_decompose_lup(mat44_t LU, sizev4_t pivot)
 	}
 }
 
-void mat44_swap_rows(mat44_t A, const size_t i, const size_t j)
+void mat44_float_swap_rows(mat44_float_t A, const size_t i, const size_t j)
 {
 	const size_t N = 4;
 	size_t k;
@@ -55,7 +55,7 @@ void mat44_swap_rows(mat44_t A, const size_t i, const size_t j)
 	}
 }
 
-void mat44_solve(mat44_t A, floatv4_t x, const floatv4_t b,
+void mat44_float_solve(mat44_float_t A, floatv4_t x, const floatv4_t b,
 		 const sizev4_t pivot)
 {
 	const size_t N = 4;
diff --git a/include/mag_cal.h b/include/mag_cal.h
index 5e1a17531e..753052f55f 100644
--- a/include/mag_cal.h
+++ b/include/mag_cal.h
@@ -29,7 +29,7 @@ struct mag_cal_t {
 	 * | x  | y  | z  | 1  |
 	 * +----+----+----+----+
 	 */
-	mat44_t acc;
+	mat44_float_t acc;
 	floatv4_t acc_w;
 	float radius;
 
diff --git a/include/mat44.h b/include/mat44.h
index 953cb5dddc..d8a8209055 100644
--- a/include/mat44.h
+++ b/include/mat44.h
@@ -11,14 +11,14 @@
 #include "vec4.h"
 #include "util.h"
 
-typedef float mat44_t[4][4];
+typedef float mat44_float_t[4][4];
 typedef size_t sizev4_t[4];
 
-void mat44_decompose_lup(mat44_t LU, sizev4_t pivot);
+void mat44_float_decompose_lup(mat44_float_t LU, sizev4_t pivot);
 
-void mat44_swap_rows(mat44_t A, const size_t i, const size_t j);
+void mat44_float_swap_rows(mat44_float_t A, const size_t i, const size_t j);
 
-void mat44_solve(mat44_t A, floatv4_t x, const floatv4_t b,
+void mat44_float_solve(mat44_float_t A, floatv4_t x, const floatv4_t b,
 		 const sizev4_t pivot);
 
 #endif  /* __CROS_EC_MAT_44_H */