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<?php $bits32 = 32; $bits64 = 64; $N32 = 0xfffffffe; $N64 = 0xfffffffffffffffe; $result = -( pow(2, $bits32) - $N32 ); echo $result,"\n"; echo pow(2,$bits32) , "\n",$N32; $result = -( pow(2, $bits64) - $N64 ); echo "\n",$result,"\n"; echo pow(2,$bits64) - PHP_INT_MAX, "\n",$N64 - PHP_INT_MAX;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KXhOv
function name:  (null)
number of ops:  40
compiled vars:  !0 = $bits32, !1 = $bits64, !2 = $N32, !3 = $N64, !4 = $result
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 32
    3     1        ASSIGN                                                   !1, 64
    4     2        ASSIGN                                                   !2, 4294967294
    5     3        ASSIGN                                                   !3, 1.84467e+19
    7     4        INIT_FCALL                                               'pow'
          5        SEND_VAL                                                 2
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                         $9      
          8        SUB                                              ~10     $9, !2
          9        MUL                                              ~11     ~10, -1
         10        ASSIGN                                                   !4, ~11
    8    11        ECHO                                                     !4
         12        ECHO                                                     '%0A'
    9    13        INIT_FCALL                                               'pow'
         14        SEND_VAL                                                 2
         15        SEND_VAR                                                 !0
         16        DO_ICALL                                         $13     
         17        ECHO                                                     $13
         18        ECHO                                                     '%0A'
         19        ECHO                                                     !2
   11    20        INIT_FCALL                                               'pow'
         21        SEND_VAL                                                 2
         22        SEND_VAR                                                 !1
         23        DO_ICALL                                         $14     
         24        SUB                                              ~15     $14, !3
         25        MUL                                              ~16     ~15, -1
         26        ASSIGN                                                   !4, ~16
   12    27        ECHO                                                     '%0A'
         28        ECHO                                                     !4
         29        ECHO                                                     '%0A'
   14    30        INIT_FCALL                                               'pow'
         31        SEND_VAL                                                 2
         32        SEND_VAR                                                 !1
         33        DO_ICALL                                         $18     
         34        SUB                                              ~19     $18, 9223372036854775807
         35        ECHO                                                     ~19
         36        ECHO                                                     '%0A'
         37        SUB                                              ~20     !3, 9223372036854775807
         38        ECHO                                                     ~20
         39      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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