diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/slowpow.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/slowpow.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sysdeps/ieee754/dbl-64/slowpow.c b/sysdeps/ieee754/dbl-64/slowpow.c index a379728b14..d200c39e59 100644 --- a/sysdeps/ieee754/dbl-64/slowpow.c +++ b/sysdeps/ieee754/dbl-64/slowpow.c @@ -34,6 +34,8 @@ #include "mpa.h" #include <math_private.h> +#include <stap-probe.h> + #ifndef SECTION # define SECTION #endif @@ -97,7 +99,12 @@ __slowpow (double x, double y, double z) __sub (&mpp, &eps, &mpr1, p); __mp_dbl (&mpr1, &res1, p); if (res == res1) - return res; + { + /* Track how often we get to the slow pow code plus + its input/output values. */ + LIBC_PROBE (slowpow_p10, 4, &x, &y, &z, &res); + return res; + } /* If we don't, then we repeat using a higher precision. 768 bits of precision ought to be enough for anybody. */ @@ -109,5 +116,10 @@ __slowpow (double x, double y, double z) __mul (&mpy, &mpz, &mpw, p); __mpexp (&mpw, &mpp, p); __mp_dbl (&mpp, &res, p); + + /* Track how often we get to the uber-slow pow code plus + its input/output values. */ + LIBC_PROBE (slowpow_p32, 4, &x, &y, &z, &res); + return res; } |