diff options
| author | Otto Moerbeek <otto@cvs.openbsd.org> | 2003-10-19 18:16:52 +0000 |
|---|---|---|
| committer | Otto Moerbeek <otto@cvs.openbsd.org> | 2003-10-19 18:16:52 +0000 |
| commit | 4a65e450f4a2eb4cd46c6bd2ad4c39c875f5319f (patch) | |
| tree | 04ac33911025e684620db873596633b6ec095a0f /usr.bin/bc | |
| parent | 73714681157ac2efda20db1fce541e30c248c05e (diff) | |
Document modern assignment ops +=, -=, ... instead of the old =+, =-, ...,
which were already smelling funny for a long time.
Diffstat (limited to 'usr.bin/bc')
| -rw-r--r-- | usr.bin/bc/USD.doc/bc | 34 |
1 files changed, 13 insertions, 21 deletions
diff --git a/usr.bin/bc/USD.doc/bc b/usr.bin/bc/USD.doc/bc index 37015b71ad6..ac7e633a52a 100644 --- a/usr.bin/bc/USD.doc/bc +++ b/usr.bin/bc/USD.doc/bc @@ -1,4 +1,4 @@ -.\" $OpenBSD: bc,v 1.1 2003/09/25 19:37:47 otto Exp $ +.\" $OpenBSD: bc,v 1.2 2003/10/19 18:16:51 otto Exp $ .\" .\" Copyright (C) Caldera International Inc. 2001-2002. .\" All rights reserved. @@ -634,12 +634,12 @@ C manuals [2] for their exact workings. .ft B .ta 2i x=y=z is the same as x=(y=z) -x =+ y x = x+y -x =\- y x = x\-y -x =* y x = x*y -x =/ y x = x/y -x =% y x = x%y -x =^ y x = x^y +x += y x = x+y +x \-= y x = x\-y +x *= y x = x*y +x /= y x = x/y +x %= y x = x%y +x ^= y x = x^y x++ (x=x+1)\-1 x\-\- (x=x\-1)+1 ++x x = x+1 @@ -649,14 +649,6 @@ x\-\- (x=x\-1)+1 Even if you don't intend to use the constructs, if you type one inadvertently, something correct but unexpected may happen. -.PP -WARNING! In some of these constructions, spaces are -significant. -There is a real difference between -.ft B -x =\- y and x= \-y. -.ft P -The first replaces x by x\-y and the second by \-y. .SH Three Important Things .PP @@ -1001,17 +993,17 @@ This expression results in assigning the value of the expression on the right to the named expression on the left. .NH 3 -\fInamed-expression\fP =+ \fIexpression\fP +\fInamed-expression\fP += \fIexpression\fP .NH 3 -\fInamed-expression\fP =\- \fIexpression\fP +\fInamed-expression\fP \-= \fIexpression\fP .NH 3 -\fInamed-expression\fP =* \fIexpression\fP +\fInamed-expression\fP *= \fIexpression\fP .NH 3 -\fInamed-expression\fP =/ \fIexpression\fP +\fInamed-expression\fP /= \fIexpression\fP .NH 3 -\fInamed-expression\fP =% \fIexpression\fP +\fInamed-expression\fP %= \fIexpression\fP .NH 3 -\fInamed-expression\fP =^ \fIexpression\fP +\fInamed-expression\fP ^= \fIexpression\fP .PP The result of the above expressions is equivalent to ``named expression = named expression OP expression'', |