initial commit

pjproject-2.11.1/pjlib/include/pj/compat/high_precision.h

@@ -0,0 +1,88 @@
+/* $Id$ */
+/* 
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#ifndef __PJ_COMPAT_HIGH_PRECISION_H__
+#define __PJ_COMPAT_HIGH_PRECISION_H__
+
+
+#if defined(PJ_HAS_FLOATING_POINT) && PJ_HAS_FLOATING_POINT != 0
+    /*
+     * The first choice for high precision math is to use double.
+     */
+#   include <math.h>
+    typedef double pj_highprec_t;
+
+#   define PJ_HIGHPREC_VALUE_IS_ZERO(a)     (a==0)
+#   define pj_highprec_mod(a,b)             (a=fmod(a,b))
+
+#elif defined(PJ_HAS_INT64) && PJ_HAS_INT64 != 0
+    /*
+     * Next choice is to use 64-bit arithmatics.
+     */
+    typedef pj_int64_t pj_highprec_t;
+
+#else
+#   warning "High precision math is not available"
+
+    /*
+     * Last, fallback to 32-bit arithmetics.
+     */
+    typedef pj_int32_t pj_highprec_t;
+
+#endif
+
+/**
+ * @def pj_highprec_mul
+ * pj_highprec_mul(a1, a2) - High Precision Multiplication
+ * Multiply a1 and a2, and store the result in a1.
+ */
+#ifndef pj_highprec_mul
+#   define pj_highprec_mul(a1,a2)   (a1 = a1 * a2)
+#endif
+
+/**
+ * @def pj_highprec_div
+ * pj_highprec_div(a1, a2) - High Precision Division
+ * Divide a2 from a1, and store the result in a1.
+ */
+#ifndef pj_highprec_div
+#   define pj_highprec_div(a1,a2)   (a1 = a1 / a2)
+#endif
+
+/**
+ * @def pj_highprec_mod
+ * pj_highprec_mod(a1, a2) - High Precision Modulus
+ * Get the modulus a2 from a1, and store the result in a1.
+ */
+#ifndef pj_highprec_mod
+#   define pj_highprec_mod(a1,a2)   (a1 = a1 % a2)
+#endif
+
+
+/**
+ * @def PJ_HIGHPREC_VALUE_IS_ZERO(a)
+ * Test if the specified high precision value is zero.
+ */
+#ifndef PJ_HIGHPREC_VALUE_IS_ZERO
+#   define PJ_HIGHPREC_VALUE_IS_ZERO(a)     (a==0)
+#endif
+
+
+#endif	/* __PJ_COMPAT_HIGH_PRECISION_H__ */
+