BEGIN {
chdir 't' if -d 't';
- @INC = '../lib';
require './test.pl';
+ set_up_inc('../lib');
}
use strict;
# but Inf is completely broken (e.g. Inf + 0 -> NaN).
skip_all "$^O with long doubles does not have sane inf/nan";
}
+ unless ($Config{d_double_has_inf} && $Config{d_double_has_nan}) {
+ skip_all "the doublekind $Config{doublekind} does not have inf/nan";
+ }
}
my $PInf = "Inf" + 0;
my $NInf = "-Inf" + 0;
-my $NaN = "NaN" + 0;
+my $NaN;
+{
+ local $^W = 0; # warning-ness tested later.
+ $NaN = "NaN" + 0;
+}
my @PInf = ("Inf", "inf", "INF", "+Inf",
- "Infinity", "INFINITE",
- "1.#INF", "1#INF");
+ "Infinity",
+ "1.#INF", "1#INF", "1.#INF00");
my @NInf = map { "-$_" } grep { ! /^\+/ } @PInf;
my @NaN = ("NAN", "nan", "qnan", "SNAN", "NanQ", "NANS",
- "1.#QNAN", "+1#SNAN", "-1.#NAN", "1#IND",
- "NaN123", "NAN(123)", "nan%",
- "nanonano"); # RIP, Robin Williams.
+ "1.#QNAN", "+1#SNAN", "-1.#NAN", "1#IND", "1.#IND00",
+ "NAN(123)");
my @printf_fmt = qw(e f g a d u o i b x p);
my @packi_fmt = qw(c C s S l L i I n N v V j J w W U);
is(sprintf("%$f", $PInf), "Inf", "$PInf sprintf %$f is Inf");
}
+is(sprintf("%+g", $PInf), "+Inf", "$PInf sprintf %+g");
+is(sprintf("%+g", $NInf), "-Inf", "$PInf sprintf %+g");
+
+is(sprintf("%4g", $PInf), " Inf", "$PInf sprintf %4g");
+is(sprintf("%-4g", $PInf), "Inf ", "$PInf sprintf %-4g");
+
+is(sprintf("%+-5g", $PInf), "+Inf ", "$PInf sprintf %+-5g");
+is(sprintf("%-+5g", $PInf), "+Inf ", "$PInf sprintf %-+5g");
+
+is(sprintf("%-+5g", $NInf), "-Inf ", "$NInf sprintf %-+5g");
+is(sprintf("%+-5g", $NInf), "-Inf ", "$NInf sprintf %+-5g");
+
ok(!defined eval { $a = sprintf("%c", $PInf)}, "sprintf %c +Inf undef");
like($@, qr/Cannot printf/, "$PInf sprintf fails");
ok(!defined eval { $a = sprintf("%c", "Inf")},
"stringy sprintf %c +Inf undef");
-like($@, qr/Cannot printf/, "stringy $PInf sprintf fails");
+like($@, qr/Cannot printf/, "stringy $PInf sprintf %c fails");
ok(!defined eval { $a = chr($PInf) }, "chr(+Inf) undef");
like($@, qr/Cannot chr/, "+Inf chr() fails");
like($@, qr/Cannot printf/, "$NInf sprintf fails");
ok(!defined eval { $a = sprintf("%c", "-Inf")},
"sprintf %c stringy -Inf undef");
-like($@, qr/Cannot printf/, "stringy $NInf sprintf fails");
+like($@, qr/Cannot printf/, "stringy $NInf sprintf %c fails");
ok(!defined eval { $a = chr($NInf) }, "chr(-Inf) undef");
like($@, qr/Cannot chr/, "-Inf chr() fails");
}
SKIP: {
- my @FInf = qw(Info Infiniti Infinityz);
+ my @FInf = qw(Infinite Info Inf123 Infiniti Infinityz);
if ($Config{usequadmath}) {
skip "quadmath strtoflt128() accepts false infinities", scalar @FInf;
}
- # Silence "isn't numeric in addition", that's kind of the point.
- local $^W = 0;
for my $i (@FInf) {
- cmp_ok("$i" + 0, '==', 0, "false infinity $i");
+ # Silence "isn't numeric in addition", that's kind of the point.
+ local $^W = 0;
+ cmp_ok("$i" + 0, '==', $PInf, "false infinity $i");
}
}
is("a" x $NInf, "", "x -Inf");
}
+{
+ eval 'for my $x (0..$PInf) { last }';
+ like($@, qr/Range iterator outside integer range/, "0..+Inf fails");
+
+ eval 'for my $x ($NInf..0) { last }';
+ like($@, qr/Range iterator outside integer range/, "-Inf..0 fails");
+}
+
# === NaN ===
cmp_ok($NaN, '!=', $NaN, "NaN is NaN numerically (by not being NaN)");
is("$NaN", "NaN", "$NaN value stringifies as NaN");
-is("+NaN" + 0, "NaN", "+NaN is NaN");
-is("-NaN" + 0, "NaN", "-NaN is NaN");
+{
+ local $^W = 0; # warning-ness tested later.
+ is("+NaN" + 0, "NaN", "+NaN is NaN");
+ is("-NaN" + 0, "NaN", "-NaN is NaN");
+}
is($NaN + 0, $NaN, "NaN + zero is NaN");
is($NaN / 2, $NaN, "half of NaN is NaN");
is($NaN * $NaN, $NaN, "NaN * NaN is NaN");
-is($NaN / $NaN, $NaN, "NaN / NaN is NaN");
+SKIP: {
+ if ($NaN == 0) {
+ skip "NaN looks like zero, avoiding dividing by it", 1;
+ }
+ is($NaN / $NaN, $NaN, "NaN / NaN is NaN");
+}
for my $f (@printf_fmt) {
is(sprintf("%$f", $NaN), "NaN", "$NaN sprintf %$f is NaN");
}
+is(sprintf("%+g", $NaN), "NaN", "$NaN sprintf %+g");
+
+is(sprintf("%4g", $NaN), " NaN", "$NaN sprintf %4g");
+is(sprintf("%-4g", $NaN), "NaN ", "$NaN sprintf %-4g");
+
+is(sprintf("%+-5g", $NaN), "NaN ", "$NaN sprintf %+-5g");
+is(sprintf("%-+5g", $NaN), "NaN ", "$NaN sprintf %-+5g");
+
ok(!defined eval { $a = sprintf("%c", $NaN)}, "sprintf %c NaN undef");
like($@, qr/Cannot printf/, "$NaN sprintf fails");
ok(!defined eval { $a = sprintf("%c", "NaN")},
"sprintf %c stringy NaN undef");
-like($@, qr/Cannot printf/, "stringy $NaN sprintf fails");
+like($@, qr/Cannot printf/, "stringy $NaN sprintf %c fails");
ok(!defined eval { $a = chr($NaN) }, "chr NaN undef");
like($@, qr/Cannot chr/, "NaN chr() fails");
is(sin($PInf), $NaN, "sin(+Inf) is NaN");
+{
+ eval 'for my $x (0..$NaN) { last }';
+ like($@, qr/Range iterator outside integer range/, "0..NaN fails");
+
+ eval 'for my $x ($NaN..0) { last }';
+ like($@, qr/Range iterator outside integer range/, "NaN..0 fails");
+}
+
# === Overflows and Underflows ===
# 1e9999 (and 1e-9999) are large (and small) enough for even
cmp_ok(-1e-9999, '==', 0, "underflow to 0 (compile time) from neg");
cmp_ok('-1e-9999', '==', 0, "underflow to 0 (runtime) from neg");
+# === Warnings triggered when and only when appropriate ===
+{
+ my $w;
+ local $SIG{__WARN__} = sub { $w = shift };
+ local $^W = 1;
+
+ my $T =
+ [
+ [ "inf", 0, $PInf ],
+ [ "infinity", 0, $PInf ],
+ [ "infxy", 1, $PInf ],
+ [ "inf34", 1, $PInf ],
+ [ "1.#INF", 0, $PInf ],
+ [ "1.#INFx", 1, $PInf ],
+ [ "1.#INF00", 0, $PInf ],
+ [ "1.#INFxy", 1, $PInf ],
+ [ " inf", 0, $PInf ],
+ [ "inf ", 0, $PInf ],
+ [ " inf ", 0, $PInf ],
+
+ [ "nan", 0, $NaN ],
+ [ "nanxy", 1, $NaN ],
+ [ "nan34", 1, $NaN ],
+ [ "nanq", 0, $NaN ],
+ [ "nans", 0, $NaN ],
+ [ "nanx", 1, $NaN ],
+ [ "nanqy", 1, $NaN ],
+ [ "nan(123)", 0, $NaN ],
+ [ "nan(0x123)", 0, $NaN ],
+ [ "nan(123xy)", 1, $NaN ],
+ [ "nan(0x123xy)", 1, $NaN ],
+ [ "nanq(123)", 0, $NaN ],
+ [ "nan(123", 1, $NaN ],
+ [ "nan(", 1, $NaN ],
+ [ "1.#NANQ", 0, $NaN ],
+ [ "1.#QNAN", 0, $NaN ],
+ [ "1.#NANQx", 1, $NaN ],
+ [ "1.#QNANx", 1, $NaN ],
+ [ "1.#IND", 0, $NaN ],
+ [ "1.#IND00", 0, $NaN ],
+ [ "1.#INDxy", 1, $NaN ],
+ [ " nan", 0, $NaN ],
+ [ "nan ", 0, $NaN ],
+ [ " nan ", 0, $NaN ],
+ ];
+
+ for my $t (@$T) {
+ print "# '$t->[0]' compile time\n";
+ my $a;
+ $w = '';
+ eval '$a = "'.$t->[0].'" + 1';
+ is("$a", "$t->[2]", "$t->[0] plus one is $t->[2]");
+ if ($t->[1]) {
+ like($w, qr/^Argument \Q"$t->[0]"\E isn't numeric/,
+ "$t->[2] numify warn");
+ } else {
+ is($w, "", "no warning expected");
+ }
+ print "# '$t->[0]' runtime\n";
+ my $n = $t->[0];
+ my $b;
+ $w = '';
+ eval '$b = $n + 1';
+ is("$b", "$t->[2]", "$n plus one is $t->[2]");
+ if ($t->[1]) {
+ like($w, qr/^Argument \Q"$n"\E isn't numeric/,
+ "$n numify warn");
+ } else {
+ is($w, "", "no warning expected");
+ }
+ }
+}
+
done_testing();