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author | Rich Felker <dalias@aerifal.cx> | 2017-06-23 15:28:10 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2017-06-23 15:28:10 -0400 |
commit | ce385fcfb2db74b109067083db4a26ca810eaa14 (patch) | |
tree | f759439c9cf1c25ea52f1488d6441dcb30b1b28d /src/math/s390x/round.c | |
parent | e6def544358afd5648a428d2e02c147a1f901048 (diff) | |
download | musl-ce385fcfb2db74b109067083db4a26ca810eaa14.tar.gz musl-ce385fcfb2db74b109067083db4a26ca810eaa14.tar.bz2 musl-ce385fcfb2db74b109067083db4a26ca810eaa14.tar.xz musl-ce385fcfb2db74b109067083db4a26ca810eaa14.zip |
s390x: add single-instruction math functions
these were introduced in z196 and not available in the baseline (z900)
ISA level. use __HTM__ as an alternate indicator for ISA level, since
gcc did not define __ARCH__ until 7.x.
patch by David Edelsohn.
Diffstat (limited to 'src/math/s390x/round.c')
-rw-r--r-- | src/math/s390x/round.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/math/s390x/round.c b/src/math/s390x/round.c new file mode 100644 index 00000000..71f80251 --- /dev/null +++ b/src/math/s390x/round.c @@ -0,0 +1,15 @@ +#include <math.h> + +#if defined(__HTM__) || __ARCH__ >= 9 + +double round(double x) +{ + __asm__ ("fidbra %0, 1, %1, 4" : "=f"(x) : "f"(x)); + return x; +} + +#else + +#include "../round.c" + +#endif |