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| -rw-r--r-- | INSTALL | 5 |
1 files changed, 4 insertions, 1 deletions
@@ -1,7 +1,7 @@ Installing mpfr-0.0 =================== -0. You first need to install GMP. See http://www.swox.com/gmp. +0. You first need to install GMP. See <http://www.swox.com/gmp/>. MPFR needs the gmp include file gmp-mparam.h that will be created during the compilation of gmp in the mpn subdirectory. So that all GMP include files are in the same directory, once @@ -44,6 +44,9 @@ errors as follows: libm.a differs from mpfr_sqrt for a=9.89438396044940260000e-134, rnd_mode=2 libm.a gives 3.14553397063986620000e-67, mpfr_sqrt gives 3.14553397063986680000e-67 (1 ulp) +Also, Linux on Alpha is known to have problems with IEEE conformance. See +http://www.linux.org.uk/VERSION/relnotes.2211.html. + In most cases, as above, the error comes from the libm.a. On Alpha/Linux, which is known to have a bad libm.a, you may even find errors in the addition or multiplication. |