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 # Also need to cope with %g notation for max_uv_p1 that actually gives an
99 # integer less than max_uv because of correct rounding for the limited
100 # precisision. This bites for 12 byte long doubles and 8 byte UVs
102 my $temp = $max_uv_p1;
104 {use integer; $max_uv_p1_as_iv = 0 + sprintf "%s", $temp}
105 my $max_uv_p1_as_uv = 0 | sprintf "%s", $temp;
107 my @opnames = split //, "-+UINPuinp";
109 # @list = map { 2->($_), 3->($_), 4->($_), 5->($_), } @list; # Prepare input
116 for my $num_chain (1..$max_chain) {
117 my @ops = map [split //], grep /[4-9]/,
118 map { sprintf "%0${num_chain}d", $_ } 0 .. 10**$num_chain - 1;
120 #@ops = ([]) unless $num_chain;
125 for my $first (2..5) {
126 for my $last (2..5) {
128 my @otherops = grep $_ <= 3, @$op;
129 my @curops = ($op,\@otherops);
131 for my $num (@list) {
135 for my $short (0, 1) {
136 # undef $inpt; # Forget all we had - some bugs were masked
138 $inpt = $num; # Try to not contaminate $num...
141 $inpt = $max_uv & $inpt; # U 2
142 } elsif ($first == 3) {
143 use integer; $inpt += $zero; # I 3
144 } elsif ($first == 4) {
145 $inpt += $zero; # N 4
147 $inpt = "$inpt"; # P 5
150 # Saves 20% of time - not with this logic:
153 #next if $num_chain > 1
154 # and "$tmp" ne "$tmp1"; # Already the coercion gives problems...
156 for my $curop (@{$curops[$short]}) {
161 } elsif ($curop == 1) {
164 $inpt = $max_uv & $inpt; # U 2
166 } elsif ($curop == 3) {
167 use integer; $inpt += $zero;
169 $inpt += $zero; # N 4
171 } elsif ($curop < 8) {
173 $inpt = "$inpt"; # P 5
174 } elsif ($curop == 6) {
175 $max_uv & $inpt; # u 6
177 use integer; $inpt + $zero;
179 } elsif ($curop == 8) {
187 $inpt = sprintf "%u", $inpt; # U 2
188 } elsif ($last == 3) {
189 $inpt = sprintf "%d", $inpt; # I 3
190 } elsif ($last == 4) {
191 $inpt = sprintf "%g", $inpt; # N 4
193 $inpt = "$inpt"; # P 5
197 if ($ans[0] ne $ans[1]) {
198 print "# '$ans[0]' ne '$ans[1]',\t$num\t=> @opnames[$first,@{$curops[0]},$last] vs @opnames[$first,@{$curops[1]},$last]\n";
199 # XXX ought to check that "+" was in the list of opnames
200 if ((($ans[0] eq $max_uv_pp) and ($ans[1] eq $max_uv_p1))
201 or (($ans[1] eq $max_uv_pp) and ($ans[0] eq $max_uv_p1))) {
202 # string ++ versus numeric ++. Tolerate this little
204 print "# ok, as string ++ of max_uv is \"$max_uv_pp\", numeric is $max_uv_p1\n"
205 } elsif ($opnames[$last] eq 'I' and $ans[1] eq "-1"
206 and $ans[0] eq $max_uv_p1_as_iv) {
207 print "# ok, \"$max_uv_p1\" correctly converts to IV \"$max_uv_p1_as_iv\"\n";
208 } elsif ($opnames[$last] eq 'U' and $ans[1] eq ~0
209 and $ans[0] eq $max_uv_p1_as_uv) {
210 print "# ok, \"$max_uv_p1\" correctly converts to UV \"$max_uv_p1_as_uv\"\n";
211 } elsif (grep {/^N$/} @opnames[@{$curops[0]}]
212 and $ans[0] == $ans[1] and $ans[0] <= ~0) {
213 print "# ok, numerically equal - notation changed due to adding zero\n";
219 print "not " if $nok;