| 1 | 19970811 -*-text-*-
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| 2 |
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| 3 | g77 libU77
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| 4 | ----------
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| 5 |
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| 6 | This directory contains an implementation of most of the `traditional'
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| 7 | Unix libU77 routines, mostly an interface to libc and libm routines
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| 8 | and some extra ones for time and date etc. It's intended for use with
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| 9 | g77, to whose configuration procedure it's currently tied, but should
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| 10 | be compatible with f2c otherwise, if using the same f2c.h.
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| 11 |
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| 12 | The contents of libU77 and its interfaces aren't consistent across
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| 13 | implementations. This one is mostly taken from documentation for (an
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| 14 | old version of) the Convex implementation and the v2 SunPro one.
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| 15 | As of g77 version 0.5.20, most of these routines have been made
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| 16 | into g77 intrinsics. Some routines have a version with a name prefixed
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| 17 | by `vxt', corresponding to the VMS Fortran versions, and these should
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| 18 | be integrated with g77's intrinsics visibility control.
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| 19 |
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| 20 | A few routines are currently missing; in the case of `fork', for
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| 21 | instance, because they're probably not useful, and in the case of
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| 22 | `qsort' and those for stream-based i/o handling, because they need
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| 23 | more effort/research. The configuration should weed out those few
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| 24 | which correspond to facilities which may not be present on some Unix
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| 25 | systems, such as symbolic links. It's unclear whether the interfaces
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| 26 | to the native library random number routines should be retained, since
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| 27 | their implementation is likely to be something one should avoid
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| 28 | assiduously.
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| 29 |
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| 30 | This library has been tested it under SunOS4.1.3 and Irix5.2 and there
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| 31 | has been some feedback from Linux; presumably potential problems lie
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| 32 | mainly with systems with impoverished native C library support which
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| 33 | haven't been properly taken care of with autoconf.
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| 34 |
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| 35 | There's another GPL'd implementation of this stuff which I only found
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| 36 | out about recently (despite having looked) and I haven't yet checked
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| 37 | how they should be amalgamated.
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| 38 |
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| 39 | Dave Love <d.love@dl.ac.uk> Aug '95
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| 40 | (minor changes by Craig Burley <burley@gnu.org> Aug '97)
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