From 7e809dfb08c6e1b59758ba82cc4d8be45832e36b Mon Sep 17 00:00:00 2001
From: Ingo <heckflosse@i-weyrich.de>
Date: Tue, 3 Jun 2014 20:12:37 +0200
Subject: [PATCH] Black output image when using ciecam02 and tone-mapping,
 Issue 2404

---
 rtengine/improcfun.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtengine/improcfun.cc b/rtengine/improcfun.cc
index 4e5330cb9..28f9b0701 100644
--- a/rtengine/improcfun.cc
+++ b/rtengine/improcfun.cc
@@ -1937,7 +1937,7 @@ printf("BADPIX");
 #endif
 		   		for (int i=0; i<height; i++) // update CieImages with new values after sharpening, defringe, contrast by detail level
 					for (int j=0; j<width; j++) {
-						float interm=ncie->sh_p[i][j]/(32768.f);
+						float interm=fabsf(ncie->sh_p[i][j]/(32768.f));
 						ncie->J_p[i][j]=100.0f* SQR(interm);
 						ncie->Q_p[i][j]=interm*Qredi;
 						ncie->M_p[i][j]=ncie->C_p[i][j]*co_e;