[MacPorts] #34535: gcc45 @4.5.3_4 gfortran gives wrong results for log and exp functions on OSX lion

[MacPorts]

#34535: gcc45 @4.5.3_4 gfortran gives wrong results for log and exp functions on
OSX lion
-------------------------------+--------------------------------------------
 Reporter:  f.baart@…          |       Owner:  mww@…           
     Type:  defect             |      Status:  new             
 Priority:  Normal             |   Milestone:                  
Component:  ports              |     Version:  2.1.1           
 Keywords:                     |        Port:  gcc45           
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Comment(by f.baart@…):

 It seems to be related to a broken mpfr.

 http://llvm.org/bugs/show_bug.cgi?id=11111

 When I do:
 port build mpfr
 and then run
 make check
 in the build folder I get errors like this:

 [tversion] MPFR tuning parameters from src/x86_64/core2/mparam.h
 PASS: tversion
 PASS: tinternals
 PASS: tinits
 PASS: tisqrt
 PASS: tsgn
 PASS: tcheck
 PASS: tisnan
 PASS: texceptions
 PASS: tset_exp
 PASS: tset
 PASS: mpf_compat
 PASS: mpfr_compat
 Error for mpfr_ui_pow(a, b, a) for b=1764214285
 a=1.10010010000111111011010101001e1
 expected1.00011111011011011011010011100e92, got
 1.10000100011010001011111101100e87
 FAIL: reuse
 PASS: tabs
 results differ for x=1.11001100001000101110010110101100001010000000000e-27
 prec=55 rnd_mode=MPFR_RNDN
 got      1.100100011101111000010011110101010001100111011011001010
 expected 1.100100011101111000010011111100011011011011001111000100
 approx
 0.11001000111011110000100111111000110110110110011110000111111001011E1
 FAIL: tacos
 Error: mpfr_acosh (1)
 FAIL: tacosh
 PASS: tadd
 PASS: tadd1sp
 PASS: tadd_d
 PASS: tadd_ui
 results differ for
 x=1.111111000111011100011011111101110100101101000001011110101000010110001000111000011010101001100000100111011100111100010111000000110000010111010010001111110101001101001101101101111110101110100000110e-1
 u=1.100000111110010000111001000100100000011110010110000111001111000101010100001011010111100011011011011001100100100100000111111100101101110001000010110111100111001111101001010101111010111110010011110e-2
 prec=222 rnd_mode=MPFR_RNDU
 got
 1.01001100010110111001000011110110001011111100000110100110111010010000010100101111111001111001110101010001011100010110000001100000101100011111011110110111111111000100000011000000010111110010010110010100101111000001011101100e-1
 expected
 1.01001100010110111001000011110110001011111100000110100110111010010000010100101111111001111001110101010001011100010110000001100000101100011111011110110111111111000100000011000000010111110010010110010101110011110101010110001e-1
 approx
 0.1010011000101101110010000111101100010111111000001101001101110100100000101001011111110011110011101010100010111000101100000011000001011000111110111101101111111110001000000110000000101111100100101100101011100111101010101100001110001000E0
 FAIL: tagm

 This appears to be related to http://trac.macports.org/ticket/33361.

-- 
Ticket URL: <https://trac.macports.org/ticket/34535#comment:4>
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