From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.c-torture/execute/ieee/mzero2.c | 58 +++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 gcc/testsuite/gcc.c-torture/execute/ieee/mzero2.c (limited to 'gcc/testsuite/gcc.c-torture/execute/ieee/mzero2.c') diff --git a/gcc/testsuite/gcc.c-torture/execute/ieee/mzero2.c b/gcc/testsuite/gcc.c-torture/execute/ieee/mzero2.c new file mode 100644 index 000000000..0da53d247 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/ieee/mzero2.c @@ -0,0 +1,58 @@ +/* Test IEEE +0/-0 rules */ + +static double pzero = +0.0; +static double nzero = -0.0; +static double pinf = +1.0 / 0.0; +static double ninf = -1.0 / 0.0; +static double nan = 0.0 / 0.0; + +void +expect (double value, double expected) +{ + if (expected != expected) /* expected value is Not a number */ + { + if (value == value) /* actual value is a number */ + abort (); + } + + else if (value != value) + abort (); /* actual value is a NaN */ + + else if (memcmp ((void *)&value, (void *)&expected, sizeof (double)) != 0) + abort (); /* values don't match */ +} + +main () +{ + expect (pzero + pzero, pzero); + expect (pzero + nzero, pzero); + expect (nzero + pzero, pzero); + expect (nzero + nzero, nzero); + + expect (pzero - pzero, pzero); + expect (pzero - nzero, pzero); + expect (nzero - pzero, nzero); + expect (nzero - nzero, pzero); + + expect (pzero * pzero, pzero); + expect (pzero * nzero, nzero); + expect (nzero * pzero, nzero); + expect (nzero * nzero, pzero); + + expect (+1.00 * pzero, pzero); + expect (-1.00 * pzero, nzero); + expect (+1.00 * nzero, nzero); + expect (-1.00 * nzero, pzero); + + expect (pzero / pzero, nan); + expect (pzero / nzero, nan); + expect (nzero / pzero, nan); + expect (nzero / nzero, nan); + + expect (+1.00 / pzero, pinf); + expect (-1.00 / pzero, ninf); + expect (+1.00 / nzero, ninf); + expect (-1.00 / nzero, pinf); + + exit (0); +} -- cgit v1.2.3