4 # test the conversion operators
8 # "N p i N vs N N": Apply op-N, then op-p, then op-i, then reporter-N
9 # Compare with application of op-N, then reporter-N
10 # Right below are descriptions of different ops and reporters.
12 # We do not use these subroutines any more, sub overhead makes a "switch"
15 # obviously, 0, 1 and 2, 3 are destructive. (XXXX 64-bit? 4 destructive too)
17 # *0 = sub {--$_[0]}; # -
18 # *1 = sub {++$_[0]}; # +
21 # *2 = sub { $_[0] = $max_uv & $_[0]}; # U
22 # *3 = sub { use integer; $_[0] += $zero}; # I
23 # *4 = sub { $_[0] += $zero}; # N
24 # *5 = sub { $_[0] = "$_[0]" }; # P
27 # *6 = sub { $max_uv & $_[0]}; # u
28 # *7 = sub { use integer; $_[0] + $zero}; # i
29 # *8 = sub { $_[0] + $zero}; # n
30 # *9 = sub { $_[0] . "" }; # p
33 # sub a2 { sprintf "%u", $_[0] } # U
34 # sub a3 { sprintf "%d", $_[0] } # I
35 # sub a4 { sprintf "%g", $_[0] } # N
36 # sub a5 { "$_[0]" } # P
45 my $max_chain = $ENV{PERL_TEST_NUMCONVERTS} || 2;
47 # Bulk out if unsigned type is hopelessly wrong:
49 my $max_uv2 = sprintf "%u", $max_uv1 ** 6; # 6 is an arbitrary number here
50 my $big_iv = do {use integer; $max_uv1 * 16}; # 16 is an arbitrary number here
52 print "# max_uv1 = $max_uv1, max_uv2 = $max_uv2, big_iv = $big_iv\n";
53 if ($max_uv1 ne $max_uv2 or $big_iv > $max_uv1) {
54 print "1..0 # skipped: unsigned perl arithmetic is not sane";
55 eval { require Config; import Config };
57 if ($Config{d_quad} eq 'define') {
58 print " (common in 64-bit platforms)";
64 my $st_t = 4*4; # We try 4 initializers and 4 reporters
67 $num += 10**$_ - 4**$_ for 1.. $max_chain;
69 print "1..$num\n"; # In fact 15 times more subsubtests...
72 my $max_iv = int($max_uv/2);
75 my $l_uv = length $max_uv;
76 my $l_iv = length $max_iv;
78 # Hope: the first digits are good
79 my $larger_than_uv = substr 97 x 100, 0, $l_uv;
80 my $smaller_than_iv = substr 12 x 100, 0, $l_iv;
81 my $yet_smaller_than_iv = substr 97 x 100, 0, ($l_iv - 1);
83 my @list = (1, $yet_smaller_than_iv, $smaller_than_iv, $max_iv, $max_iv + 1,
84 $max_uv, $max_uv + 1);
85 unshift @list, (reverse map -$_, @list), 0; # 15 elts
86 @list = map "$_", @list; # Normalize
90 # need to special case ++ for max_uv, as ++ "magic" on a string gives
91 # another string, whereas ++ magic on a string used as a number gives
92 # a number. Not a problem when NV preserves UV, but if it doesn't then
93 # stringification of the latter gives something in e notation.
95 my $max_uv_pp = "$max_uv"; $max_uv_pp++;
96 my $max_uv_p1 = "$max_uv"; $max_uv_p1+=0; $max_uv_p1++;
98 my @opnames = split //, "-+UINPuinp";
100 # @list = map { 2->($_), 3->($_), 4->($_), 5->($_), } @list; # Prepare input
107 for my $num_chain (1..$max_chain) {
108 my @ops = map [split //], grep /[4-9]/,
109 map { sprintf "%0${num_chain}d", $_ } 0 .. 10**$num_chain - 1;
111 #@ops = ([]) unless $num_chain;
116 for my $first (2..5) {
117 for my $last (2..5) {
119 my @otherops = grep $_ <= 3, @$op;
120 my @curops = ($op,\@otherops);
122 for my $num (@list) {
126 for my $short (0, 1) {
127 # undef $inpt; # Forget all we had - some bugs were masked
129 $inpt = $num; # Try to not contaminate $num...
132 $inpt = $max_uv & $inpt; # U 2
133 } elsif ($first == 3) {
134 use integer; $inpt += $zero; # I 3
135 } elsif ($first == 4) {
136 $inpt += $zero; # N 4
138 $inpt = "$inpt"; # P 5
141 # Saves 20% of time - not with this logic:
144 #next if $num_chain > 1
145 # and "$tmp" ne "$tmp1"; # Already the coercion gives problems...
147 for my $curop (@{$curops[$short]}) {
152 } elsif ($curop == 1) {
155 $inpt = $max_uv & $inpt; # U 2
157 } elsif ($curop == 3) {
158 use integer; $inpt += $zero;
160 $inpt += $zero; # N 4
162 } elsif ($curop < 8) {
164 $inpt = "$inpt"; # P 5
165 } elsif ($curop == 6) {
166 $max_uv & $inpt; # u 6
168 use integer; $inpt + $zero;
170 } elsif ($curop == 8) {
178 $inpt = sprintf "%u", $inpt; # U 2
179 } elsif ($last == 3) {
180 $inpt = sprintf "%d", $inpt; # I 3
181 } elsif ($last == 4) {
182 $inpt = sprintf "%g", $inpt; # N 4
184 $inpt = "$inpt"; # P 5
188 if ($ans[0] ne $ans[1]) {
189 print "# '$ans[0]' ne '$ans[1]',\t$num\t=> @opnames[$first,@{$curops[0]},$last] vs @opnames[$first,@{$curops[1]},$last]\n";
190 # XXX ought to check that "+" was in the list of opnames
191 if ((($ans[0] eq $max_uv_pp) and ($ans[1] eq $max_uv_p1))
192 or (($ans[1] eq $max_uv_pp) and ($ans[0] eq $max_uv_p1))) {
193 # string ++ versus numeric ++. Tolerate this little
195 print "# ok, as string ++ of max_uv is \"$max_uv_pp\", numeric is $max_uv_p1\n"
201 print "not " if $nok;