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authorschodet2005-08-02 22:09:17 +0000
committerschodet2005-08-02 22:09:17 +0000
commitca09d9bf48908036161bcf46cd9834c276a9d249 (patch)
treee9bbb57d08ff537095c40653d74a3672ffcfd50e /n/avr/modules/math/fixed/fixed.h
parent98694a3cab902c3ef3d1bdab941980ed6c94d67d (diff)
Ajout de avr.math.fixed.
Ajout de fixed_mul_f824, à tester. Ajout de fixed_div_f824, à tester.
Diffstat (limited to 'n/avr/modules/math/fixed/fixed.h')
-rw-r--r--n/avr/modules/math/fixed/fixed.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/n/avr/modules/math/fixed/fixed.h b/n/avr/modules/math/fixed/fixed.h
new file mode 100644
index 0000000..ab20779
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+++ b/n/avr/modules/math/fixed/fixed.h
@@ -0,0 +1,36 @@
+#ifndef fixed_h
+#define fixed_h
+/* fixed.h */
+/* avr.math.fixed - Fixed point math module. {{{
+ *
+ * Copyright (C) 2005 Nicolas Schodet
+ *
+ * Robot APB Team/Efrei 2006.
+ * Web: http://assos.efrei.fr/robot/
+ * Email: robot AT efrei DOT fr
+ *
+ * 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.
+ *
+ * }}} */
+
+/** Multiply f8.24 by f8.24, return f8.24. */
+#define fixed_mul_f824(a, b) ({ \
+ uint16_t dummy; \
+ asm ("" : "=r" (dummy)); \
+ fixed_mul_f824_asm (dummy, a, b); })
+int32_t
+fixed_mul_f824_asm (uint16_t dummy, int32_t a, int32_t b);
+
+#endif /* fixed_h */