1# 2019-05-24 2# 3# The author disclaims copyright to this source code. In place of 4# a legal notice, here is a blessing: 5# 6# May you do good and not evil. 7# May you find forgiveness for yourself and forgive others. 8# May you share freely, never taking more than you give. 9# 10#*********************************************************************** 11# Test cases for rounding behavior of floating point values. 12# 13 14set testdir [file dirname $argv0] 15source $testdir/tester.tcl 16set testprefix round1 17 18expr srand(0) 19unset -nocomplain iTest 20for {set iTest 1} {$iTest<=50000} {incr iTest} { 21 set x1 [expr int(rand()*100000)] 22 set x2 [expr int(rand()*100000)+1000*int(rand()*10000)] 23 set n [expr int(rand()*8)+1] 24 set x3 [string range [format %09d $x2] [expr {9-$n}] end] 25 set r $x1.$x3 26 set ans [string trimright $r 0] 27 if {[string match *. $ans]} {set ans ${ans}0} 28 do_test $iTest/$n/${r}4=>$ans { 29 set x [db one "SELECT round(${r}4,$n)"] 30 } $ans 31 set x4 [string range [format %09d [expr {$x2+1}]] [expr {9-$n}] end] 32 if {[string trim $x3 9]==""} {incr x1} 33 set r2 $x1.$x4 34 set ans [string trimright $r2 0] 35 if {[string match *. $ans]} {set ans ${ans}0} 36 do_test $iTest/$n/${r}5=>$ans { 37 set x [db one "SELECT round(${r}5,$n)"] 38 } $ans 39} 40 41finish_test 42