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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /support/dktools/dk3mas.c
Initial commit
Diffstat (limited to 'support/dktools/dk3mas.c')
-rw-r--r--support/dktools/dk3mas.c232
1 files changed, 232 insertions, 0 deletions
diff --git a/support/dktools/dk3mas.c b/support/dktools/dk3mas.c
new file mode 100644
index 0000000000..4482aa85bf
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+++ b/support/dktools/dk3mas.c
@@ -0,0 +1,232 @@
+/*
+ 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: dk3mas.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 dk3mas.c The dk3mas module.
+*/
+
+
+#line 108 "dk3mas.ctr"
+
+
+
+#include "dk3ma.h"
+
+
+
+
+
+#line 116 "dk3mas.ctr"
+
+
+
+short
+dk3ma_s_add_ok(short a, short b, int *ec)
+{
+ if (NULL != ec) {
+ if ((0 < a) && (0 < b)) {
+ if((DK3_S_MAX - a) < b) { *ec = DK3_ERROR_MATH_OVERFLOW; }
+ } else {
+ if ((0 > a) && (0 > b)) {
+ if (DK3_S_MIN == a) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ } else {
+ if ((DK3_S_MIN - a) > b) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ }
+ }
+ }
+ }
+ }
+ return (a + b);
+}
+
+
+
+short
+dk3ma_s_sub_ok(short a, short b, int *ec)
+{
+ if (NULL != ec) {
+ if ((0 < a) && (0 > b)) {
+ if((DK3_S_MAX + b) < a) { *ec = DK3_ERROR_MATH_OVERFLOW; }
+ } else {
+ if ((0 > a) && (0 < b)) {
+ if((DK3_S_MIN + b) > a) { *ec = DK3_ERROR_MATH_OVERFLOW; }
+ }
+ }
+ }
+ return (a - b);
+}
+
+
+
+short
+dk3ma_s_abs_ok(short a, int *ec)
+{
+ if (NULL != ec) { if (DK3_S_MIN == a) { *ec = DK3_ERROR_MATH_OVERFLOW; } }
+ return((0 <= a) ? a : ((short)(0 - a)));
+}
+
+
+#if VERSION_BEFORE_20141018
+short
+dk3ma_s_mul_ok(short a, short b, int *ec)
+{
+ if (NULL != ec) {
+ if ((0 != a) && (0 != b)) {
+ if ((DK3_S_MIN == a) && (1 != b)) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ } else {
+ if ((DK3_S_MIN == b) && (1 != a)) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ } else {
+ if ((DK3_S_MAX / dk3ma_s_abs_ok(a, ec)) < dk3ma_s_abs_ok(b, ec)) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ }
+ }
+ }
+ }
+ }
+ return (a * b);
+}
+#else
+short
+dk3ma_s_mul_ok(short a, short b, int *ec)
+{
+ if ((NULL != ec) && (0 != a) && (0 != b)) {
+ if (DK3_S_MIN == a) {
+ if (1 != b) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ }
+ goto finished;
+ }
+ if (DK3_S_MIN == b) {
+ if (1 != a) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ }
+ goto finished;
+ }
+ if (0 < a) {
+ if (0 < b) {
+ if ((DK3_S_MAX / a) < b) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ }
+ } else {
+ if ((DK3_S_MIN / (0 - a)) > b) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ }
+ }
+ } else {
+ if (0 < b) {
+ if ((DK3_S_MIN / (0 - b)) > a) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ }
+ } else {
+ if ((DK3_S_MAX / (0 - a)) < (0 - b)) {
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ }
+ }
+ }
+ }
+finished:
+ return (a * b);
+}
+#endif
+
+
+short
+dk3ma_s_div_ok(short a, short b, int *ec)
+{
+ short back = (short)0;
+ if (0 != b) {
+ if ((DK3_S_MIN == a) && (-1 == b)) {
+ back = DK3_S_MAX;
+ *ec = DK3_ERROR_MATH_OVERFLOW;
+ } else {
+ back = a / b;
+ }
+ } else {
+ if (NULL != ec) { *ec = DK3_ERROR_MATH_DIVZERO; }
+ if (0 <= a) { back = DK3_S_MAX; }
+ else { back = DK3_S_MIN; }
+ }
+ return back;
+}
+
+
+
+short
+dk3ma_s_gcd_ok(short a, short b, int *ec)
+{
+ short h;
+
+ /* Check a
+ */
+ if (0 > a) {
+ if (DK3_S_MIN == a) {
+ a = (short)0;
+ if (NULL != ec) { *ec = DK3_ERROR_MATH_OVERFLOW; }
+ goto finished;
+ } else {
+ a = (short)(0 - a);
+ }
+ }
+
+ /* Check b
+ */
+ if (0 > b) {
+ if (DK3_S_MIN == b) {
+ a = (short)0;
+ if (NULL != ec) { *ec = DK3_ERROR_MATH_OVERFLOW; }
+ goto finished;
+ } else {
+ b = (short)(0 - b);
+ }
+ }
+
+ /* Calculate gcd.
+ */
+ while (0 < b) {
+ h = a % b;
+ a = b;
+ b = h;
+ }
+ if(0 == a) { a = (short)1; }
+
+ /* Return result.
+ */
+ finished:
+ return a;
+}
+