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<?php $time1 = microtime(true); for ($i = 0; $i < 500000; $i ++) { $a = 1/3 * 1/3; } $time2 = microtime(true); for ($i = 0; $i < 500000; $i ++) { $a = bcmul(bcdiv(1, 3, 42), bcdiv(1, 3, 42), 42); } $time3 = microtime(true); echo "floating point: " . ($time2 - $time1) . "us" . PHP_EOL . "bcmath: " . ($time3 - $time2) . "us";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
2 jumps found. (Code = 44) Position 1 = 10, Position 2 = 6
Branch analysis from position: 10
1 jumps found. (Code = 42) Position 1 = 33
Branch analysis from position: 33
2 jumps found. (Code = 44) Position 1 = 35, Position 2 = 16
Branch analysis from position: 35
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 16
2 jumps found. (Code = 44) Position 1 = 35, Position 2 = 16
Branch analysis from position: 35
Branch analysis from position: 16
Branch analysis from position: 6
2 jumps found. (Code = 44) Position 1 = 10, Position 2 = 6
Branch analysis from position: 10
Branch analysis from position: 6
filename:       /in/nKSF6
function name:  (null)
number of ops:  49
compiled vars:  !0 = $time1, !1 = $i, !2 = $a, !3 = $time2, !4 = $time3
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'microtime'
          1        SEND_VAL                                                 <true>
          2        DO_ICALL                                         $5      
          3        ASSIGN                                                   !0, $5
    5     4        ASSIGN                                                   !1, 0
          5      > JMP                                                      ->8
    6     6    >   ASSIGN                                                   !2, 0.111111
    5     7        PRE_INC                                                  !1
          8    >   IS_SMALLER                                               !1, 500000
          9      > JMPNZ                                                    ~10, ->6
    9    10    >   INIT_FCALL                                               'microtime'
         11        SEND_VAL                                                 <true>
         12        DO_ICALL                                         $11     
         13        ASSIGN                                                   !3, $11
   11    14        ASSIGN                                                   !1, 0
         15      > JMP                                                      ->33
   12    16    >   INIT_FCALL_BY_NAME                                       'bcmul'
         17        INIT_FCALL_BY_NAME                                       'bcdiv'
         18        SEND_VAL_EX                                              1
         19        SEND_VAL_EX                                              3
         20        SEND_VAL_EX                                              42
         21        DO_FCALL                                      0  $14     
         22        SEND_VAR_NO_REF_EX                                       $14
         23        INIT_FCALL_BY_NAME                                       'bcdiv'
         24        SEND_VAL_EX                                              1
         25        SEND_VAL_EX                                              3
         26        SEND_VAL_EX                                              42
         27        DO_FCALL                                      0  $15     
         28        SEND_VAR_NO_REF_EX                                       $15
         29        SEND_VAL_EX                                              42
         30        DO_FCALL                                      0  $16     
         31        ASSIGN                                                   !2, $16
   11    32        PRE_INC                                                  !1
         33    >   IS_SMALLER                                               !1, 500000
         34      > JMPNZ                                                    ~19, ->16
   15    35    >   INIT_FCALL                                               'microtime'
         36        SEND_VAL                                                 <true>
         37        DO_ICALL                                         $20     
         38        ASSIGN                                                   !4, $20
   17    39        SUB                                              ~22     !3, !0
         40        CONCAT                                           ~23     'floating+point%3A+', ~22
         41        CONCAT                                           ~24     ~23, 'us'
         42        CONCAT                                           ~25     ~24, '%0A'
         43        CONCAT                                           ~26     ~25, 'bcmath%3A+'
         44        SUB                                              ~27     !4, !3
         45        CONCAT                                           ~28     ~26, ~27
         46        CONCAT                                           ~29     ~28, 'us'
         47        ECHO                                                     ~29
         48      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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