diff options
Diffstat (limited to 'src/smath.c')
-rw-r--r-- | src/smath.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/smath.c b/src/smath.c new file mode 100644 index 0000000..f7fb28b --- /dev/null +++ b/src/smath.c @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2019, The Linux Foundation. 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 The Linux Foundation 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 IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * 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. + */ + +#include "AEEStdDef.h" +#include "AEEsmath.h" + + +static int32 ToInt(int64 a) +{ + return (a > MAX_INT32 ? MAX_INT32 : + a < MIN_INT32 ? MIN_INT32 : + (int32)a); +} + +int smath_Add(int a, int b) +{ + return ToInt((int64)a + (int64)b); +} + +int smath_Sub(int a, int b) +{ + return ToInt((int64)a - (int64)b); +} + +int smath_Mul(int a, int b) +{ + return ToInt((int64)a * (int64)b); +} |