Tolerance check of absolute value in 'matrix_eq'

1 files changed, 2 insertions, 0 deletions

diff --git a/utils.h b/utils.h
index 8503c1b..8aecde3 100644
--- a/utils.h
+++ b/utils.h
@@ -1,6 +1,8 @@
 #ifndef UTIL_H
 #define UTIL_H
 
+#define ABS(x) ((x) >= 0 ? (x) : -(x))
+
 char *str_delete_at(const char *str, const int pos);
 size_t str_count_occ(const char *str, const char ch);