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1 | #!./perl |
2 | |
3 | # |
4 | # test the conversion operators |
5 | # |
6 | # Notations: |
7 | # |
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. |
11 | |
12 | # We do not use these subroutines any more, sub overhead makes a "switch" |
13 | # solution better: |
14 | |
15 | # obviously, 0, 1 and 2, 3 are destructive. (XXXX 64-bit? 4 destructive too) |
16 | |
17 | # *0 = sub {--$_[0]}; # - |
18 | # *1 = sub {++$_[0]}; # + |
19 | |
20 | # # Converters |
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 |
25 | |
26 | # # Side effects |
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 |
31 | |
32 | # # Reporters |
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 |
37 | |
38 | BEGIN { |
39 | chdir 't' if -d 't'; |
40 | @INC = '../lib'; |
41 | } |
42 | |
43 | use strict 'vars'; |
44 | |
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45 | my $max_chain = $ENV{PERL_TEST_NUMCONVERTS} || 2; |
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46 | |
47 | # Bulk out if unsigned type is hopelessly wrong: |
48 | my $max_uv1 = ~0; |
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 |
51 | |
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52 | print "# max_uv1 = $max_uv1, max_uv2 = $max_uv2, big_iv = $big_iv\n"; |
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53 | if ($max_uv1 ne $max_uv2 or $big_iv > $max_uv1) { |
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54 | print "1..0 # skipped: unsigned perl arithmetic is not sane"; |
55 | eval { require Config; import Config }; |
56 | use vars qw(%Config); |
57 | if ($Config{d_quad} eq 'define') { |
58 | print " (common in 64-bit platforms)"; |
59 | } |
60 | print "\n"; |
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61 | exit 0; |
62 | } |
63 | |
64 | my $st_t = 4*4; # We try 4 initializers and 4 reporters |
65 | |
66 | my $num = 0; |
67 | $num += 10**$_ - 4**$_ for 1.. $max_chain; |
68 | $num *= $st_t; |
69 | print "1..$num\n"; # In fact 15 times more subsubtests... |
70 | |
71 | my $max_uv = ~0; |
72 | my $max_iv = int($max_uv/2); |
73 | my $zero = 0; |
74 | |
75 | my $l_uv = length $max_uv; |
76 | my $l_iv = length $max_iv; |
77 | |
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); |
82 | |
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 |
87 | |
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88 | print "# @list\n"; |
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89 | |
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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. |
94 | |
95 | my $max_uv_pp = "$max_uv"; $max_uv_pp++; |
96 | my $max_uv_p1 = "$max_uv"; $max_uv_p1+=0; $max_uv_p1++; |
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97 | |
98 | my @opnames = split //, "-+UINPuinp"; |
99 | |
100 | # @list = map { 2->($_), 3->($_), 4->($_), 5->($_), } @list; # Prepare input |
101 | |
102 | #print "@list\n"; |
103 | #print "'@ops'\n"; |
104 | |
105 | my $test = 1; |
106 | my $nok; |
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; |
110 | |
111 | #@ops = ([]) unless $num_chain; |
112 | #@ops = ([6, 4]); |
113 | |
114 | # print "'@ops'\n"; |
115 | for my $op (@ops) { |
116 | for my $first (2..5) { |
117 | for my $last (2..5) { |
118 | $nok = 0; |
119 | my @otherops = grep $_ <= 3, @$op; |
120 | my @curops = ($op,\@otherops); |
121 | |
122 | for my $num (@list) { |
123 | my $inpt; |
124 | my @ans; |
125 | |
126 | for my $short (0, 1) { |
127 | # undef $inpt; # Forget all we had - some bugs were masked |
128 | |
129 | $inpt = $num; # Try to not contaminate $num... |
130 | $inpt = "$inpt"; |
131 | if ($first == 2) { |
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 |
137 | } else { |
138 | $inpt = "$inpt"; # P 5 |
139 | } |
140 | |
141 | # Saves 20% of time - not with this logic: |
142 | #my $tmp = $inpt; |
143 | #my $tmp1 = $num; |
144 | #next if $num_chain > 1 |
145 | # and "$tmp" ne "$tmp1"; # Already the coercion gives problems... |
146 | |
147 | for my $curop (@{$curops[$short]}) { |
148 | if ($curop < 5) { |
149 | if ($curop < 3) { |
150 | if ($curop == 0) { |
151 | --$inpt; # - 0 |
152 | } elsif ($curop == 1) { |
153 | ++$inpt; # + 1 |
154 | } else { |
155 | $inpt = $max_uv & $inpt; # U 2 |
156 | } |
157 | } elsif ($curop == 3) { |
158 | use integer; $inpt += $zero; |
159 | } else { |
160 | $inpt += $zero; # N 4 |
161 | } |
162 | } elsif ($curop < 8) { |
163 | if ($curop == 5) { |
164 | $inpt = "$inpt"; # P 5 |
165 | } elsif ($curop == 6) { |
166 | $max_uv & $inpt; # u 6 |
167 | } else { |
168 | use integer; $inpt + $zero; |
169 | } |
170 | } elsif ($curop == 8) { |
171 | $inpt + $zero; # n 8 |
172 | } else { |
173 | $inpt . ""; # p 9 |
174 | } |
175 | } |
176 | |
177 | if ($last == 2) { |
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 |
183 | } else { |
184 | $inpt = "$inpt"; # P 5 |
185 | } |
186 | push @ans, $inpt; |
187 | } |
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188 | if ($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 $max_uv_p1))) { |
193 | # string ++ versus numeric ++. Tolerate this little |
194 | # bit of insanity |
195 | print "# ok, as string ++ of max_uv is \"$max_uv_pp\", numeric is $max_uv_p1\n" |
196 | } else { |
197 | $nok++, |
198 | } |
199 | } |
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200 | } |
201 | print "not " if $nok; |
202 | print "ok $test\n"; |
203 | #print $txt if $nok; |
204 | $test++; |
205 | } |
206 | } |
207 | } |
208 | } |