From 08f87f769b595151be1afeff53e144f543faa614 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 06 Dec 2023 09:51:13 +0000
Subject: [PATCH] add dts config
---
kernel/lib/mpi/mpi-cmp.c | 46 ++++++++++++++++++++++++++++++++++++----------
1 files changed, 36 insertions(+), 10 deletions(-)
diff --git a/kernel/lib/mpi/mpi-cmp.c b/kernel/lib/mpi/mpi-cmp.c
index d25e9e9..c4cfa3f 100644
--- a/kernel/lib/mpi/mpi-cmp.c
+++ b/kernel/lib/mpi/mpi-cmp.c
@@ -41,28 +41,54 @@
}
EXPORT_SYMBOL_GPL(mpi_cmp_ui);
-int mpi_cmp(MPI u, MPI v)
+static int do_mpi_cmp(MPI u, MPI v, int absmode)
{
- mpi_size_t usize, vsize;
+ mpi_size_t usize;
+ mpi_size_t vsize;
+ int usign;
+ int vsign;
int cmp;
mpi_normalize(u);
mpi_normalize(v);
+
usize = u->nlimbs;
vsize = v->nlimbs;
- if (!u->sign && v->sign)
+ usign = absmode ? 0 : u->sign;
+ vsign = absmode ? 0 : v->sign;
+
+ /* Compare sign bits. */
+
+ if (!usign && vsign)
return 1;
- if (u->sign && !v->sign)
+ if (usign && !vsign)
return -1;
- if (usize != vsize && !u->sign && !v->sign)
+
+ /* U and V are either both positive or both negative. */
+
+ if (usize != vsize && !usign && !vsign)
return usize - vsize;
- if (usize != vsize && u->sign && v->sign)
- return vsize - usize;
+ if (usize != vsize && usign && vsign)
+ return vsize + usize;
if (!usize)
return 0;
cmp = mpihelp_cmp(u->d, v->d, usize);
- if (u->sign)
- return -cmp;
- return cmp;
+ if (!cmp)
+ return 0;
+ if ((cmp < 0?1:0) == (usign?1:0))
+ return 1;
+
+ return -1;
+}
+
+int mpi_cmp(MPI u, MPI v)
+{
+ return do_mpi_cmp(u, v, 0);
}
EXPORT_SYMBOL_GPL(mpi_cmp);
+
+int mpi_cmpabs(MPI u, MPI v)
+{
+ return do_mpi_cmp(u, v, 1);
+}
+EXPORT_SYMBOL_GPL(mpi_cmpabs);
--
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