port-hppa/50870: src/sys/arch/hppa/spmath/dfsqrt.c:161: weird coding ?

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>Number:         50870
>Category:       port-hppa
>Synopsis:       src/sys/arch/hppa/spmath/dfsqrt.c:161: weird coding ?
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-hppa-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 29 17:40:00 +0000 2016
>Originator:     David Binderman
>Release:        cvs dated 20160229
>Organization:
>Environment:
>Description:


src/sys/arch/hppa/spmath/dfsqrt.c:161]: (style) Boolean result is used in bitwise operation. Clarify expression with parentheses.


Source code is

       if (!even_exponent & Dbl_islessthan(resultp1,resultp2,srcp1,srcp2)) {


Looks weird. Did someone muxup & and && ?

>How-To-Repeat:

>Fix: