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Diffstat (limited to 'pod/perlop.pod')
| -rw-r--r-- | pod/perlop.pod | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/pod/perlop.pod b/pod/perlop.pod index cf36bf2248..46af19b230 100644 --- a/pod/perlop.pod +++ b/pod/perlop.pod @@ -266,8 +266,16 @@ C<$a> minus the largest multiple of C<$b> that is not greater than C<$a>. If C<$b> is negative, then C<$a % $b> is C<$a> minus the smallest multiple of C<$b> that is not less than C<$a> (i.e. the result will be less than or equal to zero). If the operands -C<$a> and C<$b> are floting point values, only the integer portion -of C<$a> and C<$b> will be used in the operation. +C<$a> and C<$b> are floating point values and the absolute value of +C<$b> (that is C<abs($b)>) is less than C<(UV_MAX + 1)>, only +the integer portion of C<$a> and C<$b> will be used in the operation +(Note: here C<UV_MAX> means the maximum of the unsigned integer type). +If the absolute value of the right operand (C<abs($b)>) is greater than +or equal to C<(UV_MAX + 1)>, "%" computes the floating-point remainder +C<$r> in the equation C<($r = $a - $i*$b)> where C<$i> is a certain +integer that makes C<$r> should have the same sign as the right operand +C<$b> (B<not> as the left operand C<$a> like C function C<fmod()>) +and the absolute value less than that of C<$b>. Note that when C<use integer> is in scope, "%" gives you direct access to the modulus operator as implemented by your C compiler. This operator is not as well defined for negative operands, but it will |