Lines Matching full:isnan
20 dnl The variable gl_func_isnanf set here is used by isnan.m4.
56 [Define if the isnan(float) function is available in libc.])
71 AC_CACHE_CHECK([whether isnan(float) can be used without linking with libm],
80 #elif defined isnan
82 # define isnanf(x) isnan ((float)(x))
94 AC_CACHE_CHECK([whether isnan(float) can be used with libm],
105 #elif defined isnan
107 # define isnanf(x) isnan ((float)(x))
125 AC_CACHE_CHECK([whether isnan(float) works], [gl_cv_func_isnanf_works],
133 #elif defined isnan
135 # define isnanf(x) isnan ((float)(x))
