[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <time.h>]],
[[hrtime_t x = 0; return x/x;]])],
[gl_cv_arithmetic_hrtime_t=yes],
[gl_cv_arithmetic_hrtime_t=no])])
if test $gl_cv_arithmetic_hrtime_t = yes; then
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <time.h>]],
[[hrtime_t x = 0; return x/x;]])],
[gl_cv_arithmetic_hrtime_t=yes],
[gl_cv_arithmetic_hrtime_t=no])])
if test $gl_cv_arithmetic_hrtime_t = yes; then