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use strict;
use warnings;
use Config;
use Math::MPFR qw(:mpfr);
# __float128 sqrt(3.0) = 1.73205080756887729352744634150587232 (36 decimal digits).
my $t = 2;
print "1..$t\n";
if(Math::MPFR::_can_pass_float128()) {
warn "\n Can pass __float128 using Rmpfr_get_float128 and Rmpfr_set_float128\n";
Rmpfr_set_default_prec(113);
my $frac = 3.0; # For me, both C and perl miscalculates sqrt(2.0), so we'll
# sweep that one under the carpet and check using sqrt(3.0),
# which seems to be calculated correctly.
my $fr = Math::MPFR->new($frac);
$fr **= 0.5;
if($fr == sqrt($frac)) {print "ok 1\n"}
else {
my $check = sprintf "%a", Rmpfr_get_float128($fr, MPFR_RNDN);
warn "\n Expected $check\n Got ", sprintf "%a\n", sqrt($frac);
print "not ok 1\n";
}
Rmpfr_set_float128($fr, 1.73205080756887729352744634150587232, MPFR_RNDN);
if($fr == Math::MPFR->new('1.73205080756887729352744634150587232')) {print "ok 2\n"}
else {
my $check = sprintf "%a", Rmpfr_get_float128($fr, MPFR_RNDN);
warn "\n Expected 1.73205080756887729352744634150587232\nGot $fr\n";
print "not ok 2\n";
}
}
elsif($Config{nvtype} eq '__float128') {
warn "\n Can pass __float128 using Rmpfr_get_NV and Rmpfr_set_NV\n";
Rmpfr_set_default_prec(113);
my $frac = 3.0; # For me, both C and perl miscalculates sqrt(2.0), so we'll
# sweep that one under the carpet and check using sqrt(3.0),
# which seems to be calculated correctly.
my $fr = Math::MPFR->new($frac);
$fr **= 0.5;
if($fr == sqrt($frac)) {print "ok 1\n"}
else {
my $check = sprintf "%a", Rmpfr_get_NV($fr, MPFR_RNDN);
warn "\n Expected $check\n Got ", sprintf "%a\n", sqrt($frac);
print "not ok 1\n";
}
Rmpfr_set_NV($fr, 1.73205080756887729352744634150587232, MPFR_RNDN);
if($fr == Math::MPFR->new('1.73205080756887729352744634150587232')) {print "ok 2\n"}
else {
my $check = sprintf "%a", Rmpfr_get_float128($fr, MPFR_RNDN);
warn "\n Expected 1.73205080756887729352744634150587232\nGot $fr\n";
print "not ok 2\n";
}
}
else {
warn "\n Skipping all tests - nvtype is $Config{nvtype}\n";
for(1 .. $t) {print "ok $_\n"}
}
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