Lines Matching refs:dx
74 set dx [expr {abs($xmax-$xmin)}]
76 if { $dx == 0.0 } {
80 set dx [expr {0.2*abs($xmax)}]
81 set xmin [expr {$xmin-0.5*$dx}]
82 set xmax [expr {$xmin+0.5*$dx}]
90 if { $dx < 0.5e-8*(abs($xmin)+abs($xmax)) } {
92 set dx [expr {1.0e-8*$xmean}]
93 set xmin [expr {$xmean - 0.5*$dx}]
94 set xmax [expr {$xmean + 0.5*$dx}]
98 # Determine the factor of 10 so that dx falls within the range 1-10
100 set expon [expr {int(log10($dx))}]
103 set dx [expr {$dx/$factor}]
106 if { $dx < $limit } {