match a bunch of gu funcs

src/libultra/gu/lookathil.c

@@ -0,0 +1,18 @@
+#include "libultra/gu.h"
+
+void guLookAtHilite (Mtx *m, LookAt *l, Hilite *h, 
+		float xEye, float yEye, float zEye,
+		float xAt,  float yAt,  float zAt,
+		float xUp,  float yUp,  float zUp,
+		float xl1,  float yl1,  float zl1,   /* light 1 direction */
+		float xl2,  float yl2,  float zl2,   /* light 2 direction */
+		int twidth, int theight)	     /* highlight txtr size*/
+{
+	float mf[4][4];
+
+	guLookAtHiliteF(mf, l, h, xEye, yEye, zEye, xAt, yAt, zAt,
+			xUp, yUp, zUp, xl1, yl1, zl1, xl2, yl2, zl2,
+			twidth, theight);
+
+	guMtxF2L(mf, m);
+}

src/libultra/gu/mtxutil.c

@@ -0,0 +1,7 @@
+#include "libultra/gu.h"
+
+void guMtxIdent(Mtx *m) {
+    float mf[4][4];
+    guMtxIdentF(mf);
+    guMtxF2L(mf, m);
+}

src/libultra/gu/normalize.c

@@ -0,0 +1,10 @@
+#include "libultra/gu.h"
+
+void guNormalize(float* x, float* y, float* z) {
+    float norm = sqrtf(*x * *x + *y * *y + *z * *z);
+    norm = 1.0f / norm;
+    *x *= norm;
+    *y *= norm;
+    *z *= norm;
+    // might return norm
+}

src/libultra/gu/ortho.c

@@ -0,0 +1,8 @@
+#include "libultra/gu.h"
+
+void guOrtho(Mtx *m, float l, float r, float b, float t, float n, float f, float scale)
+{
+	float mf[4][4];
+	guOrthoF(mf, l, r, b, t, n, f, scale);
+	guMtxF2L(mf, m);
+}