[MacPorts] #70351: legacy-support implementation of sincos does not work correctly: implicit declaration of function 'sincos'

[MacPorts]

#70351: legacy-support implementation of sincos does not work correctly: implicit
declaration of function 'sincos'
-----------------------------+--------------------
  Reporter:  barracuda156    |      Owner:  (none)
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.9.3
Resolution:                  |   Keywords:
      Port:  legacy-support  |
-----------------------------+--------------------

Comment (by kencu):

 it is declared in the math.h header:

 https://github.com/macports/macports-legacy-
 support/blob/ed58217dc3cfcf267843c9ee395219826c805393/include/math.h#L88

 and implemented in the library here:

 {{{
 https://github.com/macports/macports-legacy-
 support/blob/master/src/sincos.c
 }}}

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Ticket URL: <https://trac.macports.org/ticket/70351#comment:2>
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