Re: Bug: Compiling broken on Linux/PPC

[John Fisher <johnfish at uclink4 dot berkeley dot edu>]

Brian Gough wrote:
> 
> Support for PPC Linux and the relevant parts of the error log would be
> very useful.  A separate file for fp-ppclinux.c is optimal.
> 
> The FAILs will be due to different rounding errors on that
> architecture.  The fp-*.c files don't affect the test results, they
> only come into operation if the GSL_IEEE_MODE environment variable has
> been set.
> 
> We send things to the list if they are short. Otherwise deposit the
> file somewhere and send the url.


Gotcha.  Three files are at http://members.home.net/johnfisher02/ -- a
pair of diffs for the configure script and ieee-utils/fp.c, and a new
file, ieee-utils/fp-ppclinux.c.

Make check produced 61653 lines; the failures were:

FAIL:   gsl_sf_hyperg_1F1_int_impl(100, 400, 100.0, &r)
  test_hyperg.c 73
  expected:     907123037681.855
  obtained:    907123037681.8558    0.04068719885713332  4.4853e-14
  fracdiff: 4.709902361666654e-16
  value not within tolerance of expected value
     907123037681.855835   0.0406871988571333165
FAIL:   gsl_sf_hyperg_U_int_impl(-90, 1, 10, &r)
  test_hyperg.c 323
  expected: -1.898767714922189e+139
  obtained: -1.898767714922192e+139   1.543096725201747e+126 
8.12683e-14
  fracdiff: 6.962999882451004e-16
  value not within tolerance of expected value
  -1.8987677149221916e+139  1.54309672520174719e+126
FAIL:   gsl_sf_hyperg_U_int_impl(-90, 10, 10, &r)
  test_hyperg.c 324
  expected: -5.682999988842067e+143
  obtained: -5.682999988842072e+143   4.618478923559706e+130 
8.12683e-14
  fracdiff: 4.573953621928294e-16
  value not within tolerance of expected value
  -5.68299998884207181e+143  4.61847892355970615e+130
FAIL:   gsl_sf_hyperg_U_int_impl(-90, 10, 10, &r)
  test_hyperg.c 324
  expected: -5.682999988842067e+143
  obtained: -5.682999988842072e+143   4.618478923559706e+130 
8.12683e-14
  fracdiff: 4.573953621928294e-16
  value not within tolerance of expected value
  -5.68299998884207181e+143  4.61847892355970615e+130
FAIL:   gsl_sf_hyperg_U_impl(1, 1.2, 2.0, &r)
  test_hyperg.c 360
  expected:   0.3835044780075603
  obtained:   0.3835044780075599   9.696010384367307e-16  2.52827e-15
  fracdiff: 5.066147605858526e-16
  value not within tolerance of expected value
    0.383504478007559879  9.69601038436730741e-16
FAIL:   gsl_sf_hyperg_U_impl(-50.5, 100.1, 40, &r)
  test_hyperg.c 387
  expected: 5.937463786613894e+91
  obtained: 5.937463786613886e+91   8.703956648586891e+79  1.46594e-12
  fracdiff: 6.703793421875711e-16
  value not within tolerance of expected value
  5.93746378661388571e+91  8.70395664858689101e+79
FAIL:   gsl_sf_hyperg_2F1_conj_impl(25, 25, 1, -0.5, &r)
  test_hyperg.c 424
  expected: 5.16969440956632e-06
  obtained: 5.169694409691514e-06   5.713800742253134e-17  1.10525e-11
  fracdiff: 1.210837176728465e-11
  value/expected not consistent within reported error
  5.16969440969151365e-06  5.71380074225313361e-17
FAIL:   gsl_sf_hyperg_2F1_conj_renorm_impl(9, 9, -1.5, -0.99, &r)
  test_hyperg.c 454
  expected:   0.1083402022947613
  obtained:   0.1083402022947615   4.247728659543883e-13  3.92073e-12
  fracdiff: 1.152850812762138e-15
  value not within tolerance of expected value
    0.108340202294761503  4.24772865954388333e-13
FAIL:   gsl_sf_laguerre_n_impl(90, 2.0, 100.0, &r)
  test_sf.c 873
  expected: -2.092904225954693e+20
  obtained: -2.09290422595469e+20      50333025.30505015  2.40494e-13
  fracdiff: 7.82835630833816e-16
  value not within tolerance of expected value
  -2.09290422595468952e+20     50333025.3050501496
FAIL:   gsl_sf_synchrotron_2_impl(0.01, &r)
  test_sf.c 1083
3
  obtained:   0.1083402022947615   4.247728659543883e-13  3.92073e-12
  fracdiff: 1.152850812762138e-15
  value not within tolerance of expected value
  expected:   0.2309807734222628
  obtained:   0.2309807734222623   1.877351636458429e-16  8.12774e-16
  fracdiff: 9.613120678191913e-16
  value/expected not consistent within reported error
    0.230980773422262337  1.87735163645842852e-16



John