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<?php /** * @see https://community.developer.authorize.net/t5/The-Authorize-Net-Developer-Blog/Precision-Math-with-PHP/ba-p/8368 */ var_dump(floor((0.2 + 1.4) * 10)); // Should be 16. But it's 15! var_dump((0.2 + 1.4) * 10); // Using BC Math var_dump(bcadd('0.2', '1.4', 2) * 10); // It's 16 like we would expect it to be.
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/7TapY
function name:  (null)
number of ops:  19
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    7     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'floor'
          2        SEND_VAL                                                 16
          3        DO_ICALL                                         $0      
          4        SEND_VAR                                                 $0
          5        DO_ICALL                                                 
    8     6        INIT_FCALL                                               'var_dump'
          7        SEND_VAL                                                 16
          8        DO_ICALL                                                 
   11     9        INIT_FCALL                                               'var_dump'
         10        INIT_FCALL_BY_NAME                                       'bcadd'
         11        SEND_VAL_EX                                              '0.2'
         12        SEND_VAL_EX                                              '1.4'
         13        SEND_VAL_EX                                              2
         14        DO_FCALL                                      0  $3      
         15        MUL                                              ~4      $3, 10
         16        SEND_VAL                                                 ~4
         17        DO_ICALL                                                 
         18      > RETURN                                                   1

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