1 files changed, 92 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/math_bits_inline.c b/source/blender/blenlib/intern/math_bits_inline.c
new file mode 100644
index 00000000000..82d7e2114c2
--- /dev/null
+++ b/source/blender/blenlib/intern/math_bits_inline.c
@@ -0,0 +1,92 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ * */
+
+/** \file blender/blenlib/intern/math_bits_inline.c
+ *  \ingroup bli
+ */
+
+#ifndef __MATH_BITS_INLINE_C__
+#define __MATH_BITS_INLINE_C__
+
+#include "BLI_math_bits.h"
+
+MINLINE unsigned int highest_order_bit_i(unsigned int n)
+{
+	n |= (n >>  1);
+	n |= (n >>  2);
+	n |= (n >>  4);
+	n |= (n >>  8);
+	n |= (n >> 16);
+	return n - (n >> 1);
+}
+
+MINLINE unsigned short highest_order_bit_s(unsigned short n)
+{
+	n |= (n >>  1);
+	n |= (n >>  2);
+	n |= (n >>  4);
+	n |= (n >>  8);
+	return (unsigned short)(n - (n >> 1));
+}
+
+#ifndef __GNUC__
+MINLINE int count_bits_i(unsigned int i)
+{
+	/* variable-precision SWAR algorithm. */
+	i = i - ((i >> 1) & 0x55555555);
+	i = (i & 0x33333333) + ((i >> 2) & 0x33333333);
+	return (((i + (i >> 4)) & 0x0F0F0F0F) * 0x01010101) >> 24;
+}
+#endif
+
+MINLINE int float_as_int(float f)
+{
+	union { int i; float f; } u;
+	u.f = f;
+	return u.i;
+}
+
+MINLINE unsigned int float_as_uint(float f)
+{
+	union { unsigned int i; float f; } u;
+	u.f = f;
+	return u.i;
+}
+
+MINLINE float int_as_float(int i)
+{
+	union { int i; float f; } u;
+	u.i = i;
+	return u.f;
+}
+
+MINLINE float uint_as_float(unsigned int i)
+{
+	union { unsigned int i; float f; } u;
+	u.i = i;
+	return u.f;
+}
+
+MINLINE float xor_fl(float x, int y)
+{
+	return int_as_float(float_as_int(x) ^ y);
+}
+
+#endif /* __MATH_BITS_INLINE_C__ */