From: Ken Williams <ken@mathforum.org>
Date: Sat, 16 Feb 2008 23:22:15 +0000 (-0600)
Subject: Modulo operator and floating point numbers
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=f7918450ac2de46c81759dc6b3ec6eb57f5b59f0;p=p5sagit%2Fp5-mst-13.2.git

Modulo operator and floating point numbers
From: "Ken Williams" <kenahoo@gmail.com>
Message-ID: <6a7ee8cc0802162122r4e59b93boee18b1f045b8954d@mail.gmail.com>

p4raw-id: //depot/perl@33328
---

diff --git a/pod/perlop.pod b/pod/perlop.pod
index cf2cfc7..1827757 100644
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -260,9 +260,11 @@ X<*>
 Binary "/" divides two numbers.
 X</> X<slash>
 
-Binary "%" computes the division remainder of two numbers.  Given integer
+Binary "%" is the modulo operator, which computes the division
+remainder of its first argument with respect to its second argument.
+Given integer
 operands C<$a> and C<$b>: If C<$b> is positive, then C<$a % $b> is
-C<$a> minus the largest multiple of C<$b> that is not greater than
+C<$a> minus the largest multiple of C<$b> less than or equal to
 C<$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
@@ -273,14 +275,14 @@ the integer portion of C<$a> and C<$b> will be used in the operation
 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
+integer that makes C<$r> have the same sign as the right operand
 C<$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
+to the modulo operator as implemented by your C compiler.  This
 operator is not as well defined for negative operands, but it will
 execute faster.
-X<%> X<remainder> X<modulus> X<mod>
+X<%> X<remainder> X<modulo> X<mod>
 
 Binary "x" is the repetition operator.  In scalar context or if the left
 operand is not enclosed in parentheses, it returns a string consisting