Add fix inconsistent rounding (bug-e5f06285de).

Compute and use the "precision" for sequences of doubles: determine the number of significant digits in the fractional part of the given arguments, and round the results to that limit.
Fix copy bug in DupArithSeriesInternalRep.

1 files changed, 20 insertions, 2 deletions

diff --git a/tests/lseq.test b/tests/lseq.test
index 57b92de..7e4c9da 100755
--- a/tests/lseq.test
+++ b/tests/lseq.test
@@ -19,7 +19,7 @@ testConstraint arithSeriesShimmer 1
 testConstraint arithSeriesShimmerOk 1
 testConstraint has64BitLengths [expr {$tcl_platform(pointerSize) == 8}]
 
-## Arg errors
+# Arg errors
 test lseq-1.1 {error cases} -body {
     lseq
 } \
@@ -418,7 +418,7 @@ arithseries
 
 test lseq-3.31 {lreverse inplace with doubles} arithSeriesDouble {
     lreverse [lseq 1.1 29.9 0.3]
-} {29.9 29.599999999999998 29.299999999999997 29.0 28.7 28.4 28.099999999999998 27.799999999999997 27.5 27.2 26.9 26.599999999999998 26.299999999999997 26.0 25.7 25.4 25.099999999999998 24.799999999999997 24.5 24.2 23.9 23.599999999999998 23.299999999999997 23.0 22.7 22.4 22.099999999999998 21.799999999999997 21.5 21.2 20.9 20.6 20.299999999999997 20.0 19.7 19.4 19.1 18.799999999999997 18.5 18.2 17.9 17.6 17.299999999999997 17.0 16.7 16.4 16.1 15.799999999999999 15.5 15.2 14.899999999999999 14.6 14.299999999999999 14.0 13.7 13.399999999999999 13.099999999999998 12.8 12.5 12.2 11.899999999999999 11.599999999999998 11.3 11.0 10.7 10.399999999999999 10.099999999999998 9.8 9.5 9.2 8.899999999999999 8.599999999999998 8.3 8.0 7.699999999999999 7.399999999999999 7.099999999999998 6.800000000000001 6.5 6.199999999999999 5.899999999999999 5.599999999999998 5.300000000000001 5.0 4.699999999999999 4.399999999999999 4.099999999999998 3.8000000000000007 3.5 3.1999999999999993 2.8999999999999986 2.599999999999998 2.3000000000000007 2.0 1.6999999999999993 1.3999999999999986 1.1000000000000014}
+} {29.9 29.6 29.3 29.0 28.7 28.4 28.1 27.8 27.5 27.2 26.9 26.6 26.3 26.0 25.7 25.4 25.1 24.8 24.5 24.2 23.9 23.6 23.3 23.0 22.7 22.4 22.1 21.8 21.5 21.2 20.9 20.6 20.3 20.0 19.7 19.4 19.1 18.8 18.5 18.2 17.9 17.6 17.3 17.0 16.7 16.4 16.1 15.8 15.5 15.2 14.9 14.6 14.3 14.0 13.7 13.4 13.1 12.8 12.5 12.2 11.9 11.6 11.3 11.0 10.7 10.4 10.1 9.8 9.5 9.2 8.9 8.6 8.3 8.0 7.7 7.4 7.1 6.8 6.5 6.2 5.9 5.6 5.3 5.0 4.7 4.4 4.1 3.8 3.5 3.2 2.9 2.6 2.3 2.0 1.7 1.4 1.1}
 
 test lseq-4.1 {end expressions} {
     set start 7
@@ -567,6 +567,24 @@ test lseq-4.13 {bug lseq} -constraints has64BitLengths -body {
         [lindex $l 9223372036854775800]
 } -result {9223372036854775807 9223372036854775806 9223372036854775800}
 
+
+test lseq-4.14 {bug lseq - inconsistent rounding} {
+    # using a non-integer increment, [lseq] rounding seems to be not consistent:
+    lseq 4 40 0.1
+} {4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 9.0 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 11.0 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9 12.0 12.1 12.2 12.3 12.4 12.5 12.6 12.7 12.8 12.9 13.0 13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 14.0 14.1 14.2 14.3 14.4 14.5 14.6 14.7 14.8 14.9 15.0 15.1 15.2 15.3 15.4 15.5 15.6 15.7 15.8 15.9 16.0 16.1 16.2 16.3 16.4 16.5 16.6 16.7 16.8 16.9 17.0 17.1 17.2 17.3 17.4 17.5 17.6 17.7 17.8 17.9 18.0 18.1 18.2 18.3 18.4 18.5 18.6 18.7 18.8 18.9 19.0 19.1 19.2 19.3 19.4 19.5 19.6 19.7 19.8 19.9 20.0 20.1 20.2 20.3 20.4 20.5 20.6 20.7 20.8 20.9 21.0 21.1 21.2 21.3 21.4 21.5 21.6 21.7 21.8 21.9 22.0 22.1 22.2 22.3 22.4 22.5 22.6 22.7 22.8 22.9 23.0 23.1 23.2 23.3 23.4 23.5 23.6 23.7 23.8 23.9 24.0 24.1 24.2 24.3 24.4 24.5 24.6 24.7 24.8 24.9 25.0 25.1 25.2 25.3 25.4 25.5 25.6 25.7 25.8 25.9 26.0 26.1 26.2 26.3 26.4 26.5 26.6 26.7 26.8 26.9 27.0 27.1 27.2 27.3 27.4 27.5 27.6 27.7 27.8 27.9 28.0 28.1 28.2 28.3 28.4 28.5 28.6 28.7 28.8 28.9 29.0 29.1 29.2 29.3 29.4 29.5 29.6 29.7 29.8 29.9 30.0 30.1 30.2 30.3 30.4 30.5 30.6 30.7 30.8 30.9 31.0 31.1 31.2 31.3 31.4 31.5 31.6 31.7 31.8 31.9 32.0 32.1 32.2 32.3 32.4 32.5 32.6 32.7 32.8 32.9 33.0 33.1 33.2 33.3 33.4 33.5 33.6 33.7 33.8 33.9 34.0 34.1 34.2 34.3 34.4 34.5 34.6 34.7 34.8 34.9 35.0 35.1 35.2 35.3 35.4 35.5 35.6 35.7 35.8 35.9 36.0 36.1 36.2 36.3 36.4 36.5 36.6 36.7 36.8 36.9 37.0 37.1 37.2 37.3 37.4 37.5 37.6 37.7 37.8 37.9 38.0 38.1 38.2 38.3 38.4 38.5 38.6 38.7 38.8 38.9 39.0 39.1 39.2 39.3 39.4 39.5 39.6 39.7 39.8 39.9 40.0}
+
+test lseq-4.15 {bug lseq - inconsistent rounding} {
+    # using a non-integer increment, [lseq] rounding seems to be not consistent:
+    lseq 6 40 0.1
+} {6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 8.0 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 8.9 9.0 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 10.8 10.9 11.0 11.1 11.2 11.3 11.4 11.5 11.6 11.7 11.8 11.9 12.0 12.1 12.2 12.3 12.4 12.5 12.6 12.7 12.8 12.9 13.0 13.1 13.2 13.3 13.4 13.5 13.6 13.7 13.8 13.9 14.0 14.1 14.2 14.3 14.4 14.5 14.6 14.7 14.8 14.9 15.0 15.1 15.2 15.3 15.4 15.5 15.6 15.7 15.8 15.9 16.0 16.1 16.2 16.3 16.4 16.5 16.6 16.7 16.8 16.9 17.0 17.1 17.2 17.3 17.4 17.5 17.6 17.7 17.8 17.9 18.0 18.1 18.2 18.3 18.4 18.5 18.6 18.7 18.8 18.9 19.0 19.1 19.2 19.3 19.4 19.5 19.6 19.7 19.8 19.9 20.0 20.1 20.2 20.3 20.4 20.5 20.6 20.7 20.8 20.9 21.0 21.1 21.2 21.3 21.4 21.5 21.6 21.7 21.8 21.9 22.0 22.1 22.2 22.3 22.4 22.5 22.6 22.7 22.8 22.9 23.0 23.1 23.2 23.3 23.4 23.5 23.6 23.7 23.8 23.9 24.0 24.1 24.2 24.3 24.4 24.5 24.6 24.7 24.8 24.9 25.0 25.1 25.2 25.3 25.4 25.5 25.6 25.7 25.8 25.9 26.0 26.1 26.2 26.3 26.4 26.5 26.6 26.7 26.8 26.9 27.0 27.1 27.2 27.3 27.4 27.5 27.6 27.7 27.8 27.9 28.0 28.1 28.2 28.3 28.4 28.5 28.6 28.7 28.8 28.9 29.0 29.1 29.2 29.3 29.4 29.5 29.6 29.7 29.8 29.9 30.0 30.1 30.2 30.3 30.4 30.5 30.6 30.7 30.8 30.9 31.0 31.1 31.2 31.3 31.4 31.5 31.6 31.7 31.8 31.9 32.0 32.1 32.2 32.3 32.4 32.5 32.6 32.7 32.8 32.9 33.0 33.1 33.2 33.3 33.4 33.5 33.6 33.7 33.8 33.9 34.0 34.1 34.2 34.3 34.4 34.5 34.6 34.7 34.8 34.9 35.0 35.1 35.2 35.3 35.4 35.5 35.6 35.7 35.8 35.9 36.0 36.1 36.2 36.3 36.4 36.5 36.6 36.7 36.8 36.9 37.0 37.1 37.2 37.3 37.4 37.5 37.6 37.7 37.8 37.9 38.0 38.1 38.2 38.3 38.4 38.5 38.6 38.7 38.8 38.9 39.0 39.1 39.2 39.3 39.4 39.5 39.6 39.7 39.8 39.9 40.0}
+
+test lseq-4.16 {bug lseq - inconsistent rounding} {
+    # using a non-integer increment, [lseq] rounding seems to be not consistent:
+    set res {}
+    lappend res [lseq 4.07 6 0.1]
+    lappend res [lseq 4.03 4.208 0.013]
+} {{4.07 4.17 4.27 4.37 4.47 4.57 4.67 4.77 4.87 4.97 5.07 5.17 5.27 5.37 5.47 5.57 5.67 5.77 5.87 5.97} {4.03 4.043 4.056 4.069 4.082 4.095 4.108 4.121 4.134 4.147 4.16 4.173 4.186 4.199}}
+
 # cleanup
 ::tcltest::cleanupTests