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amd/vpelib: Fix potential overflow calculation

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[WHY]
Multiplication result may overflow int before it is converted to long
long

[HOW]
Updated the expression to avoid possible overflow

Acked-by: Chuanyu Tseng <Chuanyu.Tseng@amd.com>
Signed-off-by: Muhammad Ansari <Muhammad.Ansari@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39848>
This commit is contained in:
Ansari, Muhammad 2025-10-15 13:24:53 -04:00 • committed by Marge Bot
parent dbff0fabf0
commit 58c544a9bd
1 changed files with 1 additions and 1 deletions
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2
src/amd/vpelib/src/utils/fixpt31_32.c
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@ -259,7 +259,7 @@ struct fixed31_32 vpe_fixpt_cos(struct fixed31_32 arg)
do {
res = vpe_fixpt_sub(
vpe_fixpt_one, vpe_fixpt_div_int(vpe_fixpt_mul(square, res), n * (n - 1)));
vpe_fixpt_one, vpe_fixpt_div_int(vpe_fixpt_mul(square, res), (long long)n * (n - 1)));
n -= 2;
} while (n != 0);