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author | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2013-07-03 15:07:17 +0000 |
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committer | xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e> | 2013-07-03 15:07:17 +0000 |
commit | a0aaa3552d53b20a99566ac7116063fbb31b9964 (patch) | |
tree | 72b86341e136accdba1c339230cee0f1ba5013d9 /test/regression/int64.c | |
parent | 18bbf6d3cfb15219c87ebc79a5dd58bf75f2b4c4 (diff) | |
download | compcert-a0aaa3552d53b20a99566ac7116063fbb31b9964.tar.gz compcert-a0aaa3552d53b20a99566ac7116063fbb31b9964.zip |
Treat casts int64 -> float32 as primitive operations instead of two
casts int64 -> float64 -> float32. The latter causes double rounding
errors.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2290 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
Diffstat (limited to 'test/regression/int64.c')
-rw-r--r-- | test/regression/int64.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/test/regression/int64.c b/test/regression/int64.c index 5b32ccd9..0012216f 100644 --- a/test/regression/int64.c +++ b/test/regression/int64.c @@ -38,6 +38,7 @@ static void test1(u64 x, u64 y) s64 y3; int i; double f; + float s; printf("x = %llx\n", x); printf("y = %llx\n", y); @@ -75,6 +76,10 @@ static void test1(u64 x, u64 y) printf("stod x = %llx\n", *((u64*) &f)); f = f * 0.0001; printf("dtos f = %llx\n", (s64) f); + s = (float) x; + printf("utof x = %x\n", *((unsigned*) &s)); + s = (float) ((s64) x); + printf("stof x = %x\n", *((unsigned*) &s)); printf("\n"); } |