diff options
Diffstat (limited to 'src/vendorcode/cavium/bdk/libdram/dram-util.h')
-rw-r--r-- | src/vendorcode/cavium/bdk/libdram/dram-util.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/vendorcode/cavium/bdk/libdram/dram-util.h b/src/vendorcode/cavium/bdk/libdram/dram-util.h new file mode 100644 index 0000000000..f8ab6c1552 --- /dev/null +++ b/src/vendorcode/cavium/bdk/libdram/dram-util.h @@ -0,0 +1,96 @@ +/***********************license start*********************************** +* Copyright (c) 2003-2017 Cavium Inc. (support@cavium.com). All rights +* reserved. +* +* +* Redistribution and use in source and binary forms, with or without +* modification, are permitted provided that the following conditions are +* met: +* +* * Redistributions of source code must retain the above copyright +* notice, this list of conditions and the following disclaimer. +* +* * Redistributions in binary form must reproduce the above +* copyright notice, this list of conditions and the following +* disclaimer in the documentation and/or other materials provided +* with the distribution. +* +* * Neither the name of Cavium Inc. nor the names of +* its contributors may be used to endorse or promote products +* derived from this software without specific prior written +* permission. +* +* This Software, including technical data, may be subject to U.S. export +* control laws, including the U.S. Export Administration Act and its +* associated regulations, and may be subject to export or import +* regulations in other countries. +* +* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" +* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR +* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT +* TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY +* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT +* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES +* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR +* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, +* QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK +* ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU. +***********************license end**************************************/ + +/** + * Small utility functions for use by libdram internally. These + * are not meant for users's of the libdram API. + */ + +/** + * Standard min(a,b) macro + */ +#define min(X, Y) \ + ({ typeof (X) __x = (X); \ + typeof (Y) __y = (Y); \ + (__x < __y) ? __x : __y; }) + +/** + * Standard max(a,b) macro + */ +#define max(X, Y) \ + ({ typeof (X) __x = (X); typeof(Y) __y = (Y); \ + (__x > __y) ? __x : __y; }) + +/** + * Absolute value of an integer + * + * @param v + * + * @return + */ +static inline int64_t _abs(int64_t v) +{ + return (v < 0) ? -v : v; +} + +/** + * Sign of an integer + * + * @param v + * + * @return + */ +static inline int64_t _sign(int64_t v) +{ + return v < 0; +} + +/** + * Divide and round results up to the next higher integer. + * + * @param dividend + * @param divisor + * + * @return + */ +static inline uint64_t divide_roundup(uint64_t dividend, uint64_t divisor) +{ + return (dividend + divisor - 1) / divisor; +} + |