Thanks!! I had, foolishly, not considered that the displayed base 10 might be rounded.

Several literals slightly larger than 1.797693134862314e+308 are converted to non-infinite numbers, including two in the following test that are converted to what I believe is the largest possible value.

use strict;
use warnings;
use Devel::Peek;

foreach my $x (
    [ '1.797693134862314e+308' , 1.797693134862314e+308 ],
    [ '1.7976931348623141e+308' , 1.7976931348623141e+308 ],
    [ '1.7976931348623142e+308' , 1.7976931348623142e+308 ],
    [ '1.7976931348623143e+308' , 1.7976931348623143e+308 ],
    [ '1.7976931348623144e+308' , 1.7976931348623144e+308 ],
    [ '1.7976931348623145e+308' , 1.7976931348623145e+308 ],
    [ '1.7976931348623146e+308' , 1.7976931348623146e+308 ],
    [ '1.7976931348623147e+308' , 1.7976931348623147e+308 ],
    [ '1.7976931348623148e+308' , 1.7976931348623148e+308 ],
    [ '1.7976931348623149e+308' , 1.7976931348623149e+308 ],
    [ '1.7976931348623150e+308' , 1.7976931348623150e+308 ],
    [ '1.7976931348623151e+308' , 1.7976931348623151e+308 ],
    [ '1.7976931348623152e+308' , 1.7976931348623152e+308 ],
    [ '1.7976931348623153e+308' , 1.7976931348623153e+308 ],
    [ '1.7976931348623154e+308' , 1.7976931348623154e+308 ],
    [ '1.7976931348623155e+308' , 1.7976931348623155e+308 ],
    [ '1.7976931348623156e+308' , 1.7976931348623156e+308 ],
    [ '1.7976931348623157e+308' , 1.7976931348623157e+308 ],
    [ '1.7976931348623158e+308' , 1.7976931348623158e+308 ],
    [ '1.7976931348623159e+308' , 1.7976931348623159e+308 ],
) {
    my ($string, $number) = @$x;

    print "$string\n";
    Dump($number);

    my $foo = pack('d', $number);
    Dump($foo);
    print "\n";
}

__END__

1.797693134862314e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\366\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623141e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\367\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623142e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\367\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623143e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\370\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623144e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\370\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623145e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\371\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623146e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\372\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623147e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\372\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623148e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\373\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623149e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486231e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\373\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623150e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486232e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\374\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623151e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486232e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\374\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623152e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486232e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\375\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623153e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486232e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\375\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623154e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486232e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\376\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623155e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486232e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\376\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623156e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486232e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\377\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623157e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = 1.79769313486232e+308
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\377\377\377\377\377\377\357\177"\0
  CUR = 8
  LEN = 12

1.7976931348623158e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = inf
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\0\0\0\0\0\0\360\177"\0
  CUR = 8
  LEN = 12

1.7976931348623159e+308
SV = NV(0x88c58c8) at 0x88f0b50
  REFCNT = 1
  FLAGS = (PADMY,NOK,pNOK)
  NV = inf
SV = PV(0x88ed958) at 0x88f0bc0
  REFCNT = 1
  FLAGS = (PADMY,POK,pPOK)
  PV = 0x88a7308 "\0\0\0\0\0\0\360\177"\0
  CUR = 8
  LEN = 12

[download]

In reply to Re^2: Large floating point literals by ig
in thread Large floating point literals by ig

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