From afe5654e207960eec30e7b0affe1827f07207533 Mon Sep 17 00:00:00 2001
From: Qianqian Fang <fangqq@gmail.com>
Date: Tue, 20 Sep 2022 22:08:08 -0400
Subject: [PATCH] make flag compatible with zmat v0.9.8 convention

---
 src/zmatlib.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/zmatlib.c b/src/zmatlib.c
index b227c7a..988aee4 100644
--- a/src/zmatlib.c
+++ b/src/zmatlib.c
@@ -182,9 +182,9 @@ int zmat_run(const size_t inputsize, unsigned char* inputstr, size_t* outputsize
         return -1;
     }
 
-    nthread = (flags.param.nthread == 0) ? 1 : flags.param.nthread;
-    shuffle = (flags.param.shuffle == 0) ? 1 : flags.param.shuffle;
-    typesize = (flags.param.typesize == 0) ? 4 : flags.param.typesize;
+    nthread = (flags.param.nthread == 0 || flags.param.nthread == -1) ? 1 : flags.param.nthread;
+    shuffle = (flags.param.shuffle == 0 || flags.param.shuffle == -1) ? 1 : flags.param.shuffle;
+    typesize = (flags.param.typesize == 0 || flags.param.typesize == -1) ? 4 : flags.param.typesize;
     clevel = (flags.param.clevel == 0) ? 0 : flags.param.clevel;
 
     if (clevel) {