Description:
------------
NaN to int cast undefined behavior in exif [ext/exif/tests/bug79046.phpt]
Above TC fails on big endian architecture, the expected value for StripOffsets is NAN whereas that returned on Big endian is float(8.9143601808023E-41)

Could you please guide us on how to go about it.

PFA test case logs on Little and Big endian Architecture.

Little Endian:

test@a2a9ec71b826:~/php/php-src$ ./sapi/cli/php  -f "ext/exif/tests/bug79046.phpt"
--TEST--
Bug #79046: NaN to int cast undefined behavior in exif
--FILE--

array(8) {
  ["FileDateTime"]=>
  int(0)
  ["FileSize"]=>
  int(33)
  ["FileType"]=>
  int(8)
  ["MimeType"]=>
  string(10) "image/tiff"
  ["SectionsFound"]=>
  string(24) "ANY_TAG, IFD0, THUMBNAIL"
  ["COMPUTED"]=>
  array(2) {
    ["IsColor"]=>
    int(0)
    ["ByteOrderMotorola"]=>
    int(1)
  }
  ["StripOffsets"]=>
  float(NAN)
  ["THUMBNAIL"]=>
  array(1) {
    ["StripOffsets"]=>
    float(NAN)
  }
}

Big endian:

--TEST--
Bug #79046: NaN to int cast undefined behavior in exif
--FILE--
array(8) {
  ["FileDateTime"]=>
  int(0)
  ["FileSize"]=>
  int(33)
  ["FileType"]=>
  int(8)
  ["MimeType"]=>
  string(10) "image/tiff"
  ["SectionsFound"]=>
  string(24) "ANY_TAG, IFD0, THUMBNAIL"
  ["COMPUTED"]=>
  array(2) {
    ["IsColor"]=>
    int(0)
    ["ByteOrderMotorola"]=>
    int(1)
  }
  ["StripOffsets"]=>
  float(8.9143601808023E-41)
  ["THUMBNAIL"]=>
  array(1) {
    ["StripOffsets"]=>
    float(8.9143601808023E-41)
  }
}