From: Daniel Jones <dcjones@cs.washington.edu>
Date: Tue, 22 Nov 2011 22:50:32 +0000 (-0800)
Subject: Add the offset, not subtract.
X-Git-Url: https://git.donarmstrong.com/?p=fastq-tools.git;a=commitdiff_plain;h=29c57c81e12aaa9a7a5b5fe2f6e3864c6ada81d3

Add the offset, not subtract.
---

diff --git a/src/fastq-qualadj.c b/src/fastq-qualadj.c
index 2bfa31f..488fdad 100644
--- a/src/fastq-qualadj.c
+++ b/src/fastq-qualadj.c
@@ -51,7 +51,7 @@ void fastq_qualadj(FILE* fin, FILE* fout, int offset)
 
     while (fastq_next(fqf, seq)) {
         for (i = 0; i < seq->qual.n; ++i) {
-            c = (int) seq->qual.s[i] - offset;
+            c = (int) seq->qual.s[i] + offset;
             c = c < 0 ? 0 : (c > 126 ? 126: c);
             seq->qual.s[i] = (char) c;
         }