diff options
author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /support/dktools/dk3maus.c |
Initial commit
Diffstat (limited to 'support/dktools/dk3maus.c')
-rw-r--r-- | support/dktools/dk3maus.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/support/dktools/dk3maus.c b/support/dktools/dk3maus.c new file mode 100644 index 0000000000..97fc88e944 --- /dev/null +++ b/support/dktools/dk3maus.c @@ -0,0 +1,114 @@ +/* + WARNING: This file was generated by dkct. + Changes you make here will be lost if dkct is run again! + You should modify the original source and run dkct on it. + Original source: dk3maus.ctr +*/ + +/* +Copyright (C) 2014-2017, Dirk Krause + +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 opyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. +* Neither the name of the author nor the names of contributors may be used + to endorse or promote products derived from this software without specific + prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. +IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +/** @file dk3maus.c The dk3maus module. +*/ + + +#line 98 "dk3maus.ctr" + + + +#include "dk3ma.h" + + + + + +#line 106 "dk3maus.ctr" + + + +unsigned short +dk3ma_us_add_ok(unsigned short a, unsigned short b, int *ec) +{ + if (NULL != ec) { + if ((DK3_US_MAX - a) < b) { *ec = DK3_ERROR_MATH_OVERFLOW; } + } + return (a + b); +} + + + +unsigned short +dk3ma_us_sub_ok(unsigned short a, unsigned short b, int *ec) +{ + if (NULL != ec) { if (b > a) { *ec = DK3_ERROR_MATH_OVERFLOW; } } + return (a - b); +} + + + +unsigned short +dk3ma_us_mul_ok(unsigned short a, unsigned short b, int *ec) +{ + if (NULL != ec) { + if (0 != a) { + if ((DK3_US_MAX / a) < b) { *ec = DK3_ERROR_MATH_OVERFLOW; } + } + } + return (a * b); +} + + + +unsigned short +dk3ma_us_div_ok(unsigned short a, unsigned short b, int *ec) +{ + unsigned short back = (unsigned short)0; + if (0 != b) { + back = a / b; + } else { + if (NULL != ec) { *ec = DK3_ERROR_MATH_DIVZERO; } + back = DK3_US_MAX; + } + return back; +} + + + +unsigned short +dk3ma_us_gcd(unsigned short a, unsigned short b) +{ + unsigned short h; + while (0 < b) { + h = a % b; + a = b; + b = h; + } + if (0 == a) { a = (unsigned short)1; } + return a; +} + |