diff options
Diffstat (limited to 'sysdeps/ieee754/dbl-64/slowexp.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/slowexp.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sysdeps/ieee754/dbl-64/slowexp.c b/sysdeps/ieee754/dbl-64/slowexp.c index 8f353f634f..525224f44a 100644 --- a/sysdeps/ieee754/dbl-64/slowexp.c +++ b/sysdeps/ieee754/dbl-64/slowexp.c @@ -29,6 +29,8 @@ /**************************************************************************/ #include <math_private.h> +#include <stap-probe.h> + #ifndef USE_LONG_DOUBLE_FOR_MP # include "mpa.h" void __mpexp (mp_no *x, mp_no *y, int p); @@ -60,13 +62,22 @@ __slowexp (double x) __mp_dbl (&mpw, &w, p); __mp_dbl (&mpz, &z, p); if (w == z) - return w; + { + /* Track how often we get to the slow exp code plus + its input/output values. */ + LIBC_PROBE (slowexp_p6, 2, &x, &w); + return w; + } else { p = 32; __dbl_mp (x, &mpx, p); __mpexp (&mpx, &mpy, p); __mp_dbl (&mpy, &res, p); + + /* Track how often we get to the uber-slow exp code plus + its input/output values. */ + LIBC_PROBE (slowexp_p32, 2, &x, &res); return res; } #else |