Initial Contribution
diff --git a/opengl/libagl/fp.cpp b/opengl/libagl/fp.cpp
new file mode 100644
index 0000000..ae5f1fe
--- /dev/null
+++ b/opengl/libagl/fp.cpp
@@ -0,0 +1,87 @@
+/* libs/opengles/fp.cpp
+**
+** Copyright 2006, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include "fp.h"
+
+// ----------------------------------------------------------------------------
+
+#if !defined(__arm__)
+GGLfixed gglFloatToFixed(float v) {
+ return GGLfixed(floorf(v * 65536.0f + 0.5f));
+}
+#endif
+
+// ----------------------------------------------------------------------------
+
+namespace android {
+
+namespace gl {
+
+GLfloat fixedToFloat(GLfixed x)
+{
+#if DEBUG_USE_FLOATS
+ return x / 65536.0f;
+#else
+ if (!x) return 0;
+ const uint32_t s = x & 0x80000000;
+ union {
+ uint32_t i;
+ float f;
+ };
+ i = s ? -x : x;
+ const int c = gglClz(i) - 8;
+ i = (c>=0) ? (i<<c) : (i>>-c);
+ const uint32_t e = 134 - c;
+ i &= ~0x800000;
+ i |= e<<23;
+ i |= s;
+ return f;
+#endif
+}
+
+float sinef(float x)
+{
+ const float A = 1.0f / (2.0f*M_PI);
+ const float B = -16.0f;
+ const float C = 8.0f;
+
+ // scale angle for easy argument reduction
+ x *= A;
+
+ if (fabsf(x) >= 0.5f) {
+ // Argument reduction
+ x = x - ceilf(x + 0.5f) + 1.0f;
+ }
+
+ const float y = B*x*fabsf(x) + C*x;
+ return 0.2215f * (y*fabsf(y) - y) + y;
+}
+
+float cosinef(float x)
+{
+ return sinef(x + float(M_PI/2));
+}
+
+void sincosf(GLfloat angle, GLfloat* s, GLfloat* c) {
+ *s = sinef(angle);
+ *c = cosinef(angle);
+}
+
+}; // namespace fp_utils
+
+// ----------------------------------------------------------------------------
+}; // namespace android