adding dependencies

libopeninv/include/my_fp.h

@@ -0,0 +1,65 @@
+/*
+ * This file is part of the libopeninv project.
+ *
+ * Copyright (C) 2011 Johannes Huebner <dev@johanneshuebner.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef MY_FP_H_INCLUDED
+#define MY_FP_H_INCLUDED
+
+#include <stdint.h>
+
+#define FRAC_DIGITS 5
+
+#ifndef CST_DIGITS
+#define CST_DIGITS FRAC_DIGITS
+#endif
+
+#define FRAC_FAC (1 << CST_DIGITS)
+
+#define CST_CONVERT(a) ((a) << (CST_DIGITS - FRAC_DIGITS))
+#define CST_ICONVERT(a) ((a) >> (CST_DIGITS - FRAC_DIGITS))
+
+#define UTOA_FRACDEC 100
+#define FP_DECIMALS 2
+
+#define FP_TOFLOAT(a) (((float)a) / FRAC_FAC)
+#define FP_FROMINT(a) ((s32fp)((a) << CST_DIGITS))
+#define FP_TOINT(a)   ((s32fp)((a) >> CST_DIGITS))
+#define FP_FROMFLT(a) ((s32fp)((a) * FRAC_FAC))
+
+#define FP_MUL(a, b) (((a) * (b)) >> CST_DIGITS)
+#define FP_DIV(a, b) (((a) << CST_DIGITS) / (b))
+
+typedef uint32_t u32fp;
+typedef int32_t s32fp;
+typedef int16_t s16fp;
+typedef uint16_t u16fp;
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+char* fp_itoa(char * buf, s32fp a);
+s32fp fp_atoi(const char *str, int fracDigits);
+u32fp fp_sqrt(u32fp rad);
+s32fp fp_ln(unsigned int x);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif