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2*4882a593SmuzhiyunRelease notes for Linux Kernel VFP support code
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5*4882a593SmuzhiyunDate: 	20 May 2004
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7*4882a593SmuzhiyunAuthor:	Russell King
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9*4882a593SmuzhiyunThis is the first release of the Linux Kernel VFP support code.  It
10*4882a593Smuzhiyunprovides support for the exceptions bounced from VFP hardware found
11*4882a593Smuzhiyunon ARM926EJ-S.
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13*4882a593SmuzhiyunThis release has been validated against the SoftFloat-2b library by
14*4882a593SmuzhiyunJohn R. Hauser using the TestFloat-2a test suite.  Details of this
15*4882a593Smuzhiyunlibrary and test suite can be found at:
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17*4882a593Smuzhiyun   http://www.jhauser.us/arithmetic/SoftFloat.html
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19*4882a593SmuzhiyunThe operations which have been tested with this package are:
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21*4882a593Smuzhiyun - fdiv
22*4882a593Smuzhiyun - fsub
23*4882a593Smuzhiyun - fadd
24*4882a593Smuzhiyun - fmul
25*4882a593Smuzhiyun - fcmp
26*4882a593Smuzhiyun - fcmpe
27*4882a593Smuzhiyun - fcvtd
28*4882a593Smuzhiyun - fcvts
29*4882a593Smuzhiyun - fsito
30*4882a593Smuzhiyun - ftosi
31*4882a593Smuzhiyun - fsqrt
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33*4882a593SmuzhiyunAll the above pass softfloat tests with the following exceptions:
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35*4882a593Smuzhiyun- fadd/fsub shows some differences in the handling of +0 / -0 results
36*4882a593Smuzhiyun  when input operands differ in signs.
37*4882a593Smuzhiyun- the handling of underflow exceptions is slightly different.  If a
38*4882a593Smuzhiyun  result underflows before rounding, but becomes a normalised number
39*4882a593Smuzhiyun  after rounding, we do not signal an underflow exception.
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41*4882a593SmuzhiyunOther operations which have been tested by basic assembly-only tests
42*4882a593Smuzhiyunare:
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44*4882a593Smuzhiyun - fcpy
45*4882a593Smuzhiyun - fabs
46*4882a593Smuzhiyun - fneg
47*4882a593Smuzhiyun - ftoui
48*4882a593Smuzhiyun - ftosiz
49*4882a593Smuzhiyun - ftouiz
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51*4882a593SmuzhiyunThe combination operations have not been tested:
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53*4882a593Smuzhiyun - fmac
54*4882a593Smuzhiyun - fnmac
55*4882a593Smuzhiyun - fmsc
56*4882a593Smuzhiyun - fnmsc
57*4882a593Smuzhiyun - fnmul
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