[RTEMS Project] #2971: Add fenv.h to newlib

[RTEMS trac]

#2971: Add fenv.h to newlib
------------------------------+----------------------------
 Reporter:  Joel Sherrill     |       Owner:  Needs Funding
     Type:  defect            |      Status:  assigned
 Priority:  normal            |   Milestone:  Indefinite
Component:  unspecified       |     Version:
 Severity:  normal            |  Resolution:
 Keywords:  POSIX-Compliance  |  Blocked By:
 Blocking:                    |
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Comment (by Eshan dhawan <eshandhawan51@…>):

 In [changeset:"e84587355a64152b8cd6ae748ac88d8c75447b51/rtems"
 e845873/rtems]:
 {{{
 #!CommitTicketReference repository="rtems"
 revision="e84587355a64152b8cd6ae748ac88d8c75447b51"
 tests for fenv.h functions

 added tests for fesetexeptflag(), fegetexeptflag(),
 fegetround(), fesetround().

 In the test fegetround() does not return any flag
 other then FE_TONEAREST in tests.
 This is probably due to soft float.

 The test complies successfully and returns assert
 at fegetround()

 Other tests run without any errors
 tested on RISCV/rv32imac

 The test prints nothing if runs successfully.

 updates #2971

 Signed-off-by: Eshan dhawan <eshandhawan51 at gmail.com>
 }}}

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Ticket URL: <http://devel.rtems.org/ticket/2971#comment:5>
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