Add vector_4

libretro-common/gfx/math/vector_2.c

@@ -37,18 +37,27 @@ float vec2_cross(const float *a, const float *b)
 
 void vec2_add(float *dst, const float *src)
 {
-	dst[0] += src[0];
-	dst[1] += src[1];
+   unsigned i;
+   unsigned n = 2;
+
+   for (i = 0; i < n; i++)
+      dst[i] += src[i];
 }
 
 void vec2_subtract(float *dst, const float *src)
 {
-	dst[0] -= src[0];
-	dst[1] -= src[1];
+   unsigned i;
+   unsigned n = 2;
+
+   for (i = 0; i < n; i++)
+      dst[i] -= src[i];
 }
 
 void vec2_copy(float *dst, const float *src)
 {
-	dst[0] = src[0];
-	dst[1] = src[1];
+   unsigned i;
+   unsigned n = 2;
+
+   for (i = 0; i < n; i++)
+      dst[i] = src[i];
 }

libretro-common/gfx/math/vector_3.c

@@ -46,30 +46,38 @@ float vec3_length(const float *a)
 
 void vec3_add(float *dst, const float *src)
 {
-	dst[0] += src[0];
-	dst[1] += src[1];
-	dst[2] += src[2];
+   unsigned i;
+   unsigned n = 3;
+
+   for (i = 0; i < n; i++)
+      dst[i] += src[i];
 }
 
 void vec3_subtract(float *dst, const float *src)
 {
-	dst[0] -= src[0];
-	dst[1] -= src[1];
-	dst[2] -= src[2];
+   unsigned i;
+   unsigned n = 3;
+
+   for (i = 0; i < n; i++)
+      dst[i] -= src[i];
 }
 
 void vec3_scale(float *dst, const float scale)
 {
-	dst[0] *= scale;
-	dst[1] *= scale;
-	dst[2] *= scale;
+   unsigned i;
+   unsigned n = 3;
+
+   for (i = 0; i < n; i++)
+      dst[i] *= scale;
 }
 
 void vec3_copy(float *dst, const float *src)
 {
-	dst[0] = src[0];
-	dst[1] = src[1];
-	dst[2] = src[2];
+   unsigned i;
+   unsigned n = 3;
+
+   for (i = 0; i < n; i++)
+      dst[i] = src[i];
 }
 
 void vec3_normalize(float *dst)

libretro-common/gfx/math/vector_4.c

@@ -0,0 +1,62 @@
+/* Copyright  (C) 2010-2016 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (vector_4.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <math.h>
+
+#include <gfx/math/vector_4.h>
+
+void vec4_add(float *dst, const float *src)
+{
+   unsigned i;
+   unsigned n = 4;
+
+   for (i = 0; i < n; i++)
+      dst[i] += src[i];
+}
+
+void vec4_subtract(float *dst, const float *src)
+{
+   unsigned i;
+   unsigned n = 4;
+
+   for (i = 0; i < n; i++)
+      dst[i] -= src[i];
+}
+
+void vec4_scale(float *dst, const float scale)
+{
+   unsigned i;
+   unsigned n = 4;
+
+   for (i = 0; i < n; i++)
+      dst[i] *= scale;
+}
+
+void vec4_copy(float *dst, const float *src)
+{
+   unsigned i;
+   unsigned n = 4;
+
+   for (i = 0; i < n; i++)
+      dst[i] = src[i];
+}

libretro-common/include/gfx/math/vector_4.h

@@ -0,0 +1,39 @@
+/* Copyright  (C) 2010-2016 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (vector_4.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_GFX_MATH_VECTOR_4_H__
+#define __LIBRETRO_SDK_GFX_MATH_VECTOR_4_H__
+
+#include <stdint.h>
+
+typedef float vec4_t[4];
+
+void vec4_add(float *dst, const float *src);
+
+void vec4_subtract(float *dst, const float *src);
+
+void vec4_scale(float *dst, const float scale);
+
+void vec4_copy(float *dst, const float *src);
+
+#endif
+