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| author | Rich Felker <dalias@aerifal.cx> | 2017-06-23 15:28:10 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2017-06-23 15:28:10 -0400 |
| commit | ce385fcfb2db74b109067083db4a26ca810eaa14 (patch) | |
| tree | f759439c9cf1c25ea52f1488d6441dcb30b1b28d /src/math/s390x/sqrtf.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/sqrtf.c')
| -rw-r--r-- | src/math/s390x/sqrtf.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/math/s390x/sqrtf.c b/src/math/s390x/sqrtf.c new file mode 100644 index 00000000..52f57eb9 --- /dev/null +++ b/src/math/s390x/sqrtf.c @@ -0,0 +1,15 @@ +#include <math.h> + +#if defined(__HTM__) || __ARCH__ >= 9 + +float sqrtf(float x) +{ + __asm__ ("sqebr %0, %1" : "=f"(x) : "f"(x)); + return x; +} + +#else + +#include "../sqrtf.c" + +#endif |