iraf.net

NUMBER:	178
MODULE:	images.fmedian
SYSTEM:	V2.9
DATE:	Tue Aug 18 11:31:49 MST 1992
FROM:	davis

BUG:	The fmedian task can crash with a segmentation violation or a
	floating operand error if image pixel to integer mapping is turned
	off (hmin = zmin and hmax = zmax) and the input image contains
	data outside the range defined by zmin and zmax. The bug is not
	seen often because for most ccd images the data is between -32768
	and 32767.

STATUS:	The bug is fixed in 2.10.1. The work-around is to either let zmin and
	zmax default to the image minimum and maximum or set hmin and hmax
	to numbers that are slightly different from hmin and hmax.