[Bug gdb/18318] New: Printing an hexadecimal floating constant with negative exponent gives wrong result

["olivier.gay at a3 dot epfl.ch" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=18318

            Bug ID: 18318
           Summary: Printing an hexadecimal floating constant with
                    negative exponent gives wrong result
           Product: gdb
           Version: 7.9
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: olivier.gay at a3 dot epfl.ch

Printing an hexadecimal floating constant with positive exponent is OK:

(gdb) p/f 0x00.1p0
$1 = 0.0625
(gdb) p/f 0x00.1p1
$2 = 0.125

but if the exponent is negative then the result is wrong:

(gdb) p/f 0x00.1p-1
$3 = -0.9375

The expected result is 0.031250.

Tested with gdb 7.9.

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