Lines Matching refs:isnand

1 # isnand.m4 serial 11
7 dnl Check how to get or define isnand().
31 dnl Check how to get or define isnand() without linking with libm.
43 dnl Prerequisites of replacement isnand definition. It does not need -lm.
49 dnl Test whether isnand() can be used with libm.
62              # undef isnand
63              # define isnand(x) __builtin_isnan ((double)(x))
65              # undef isnand
66              # define isnand(x) isnan ((double)(x))
69            [[return isnand (x);]])],
85              # undef isnand
86              # define isnand(x) __builtin_isnan ((double)(x))
88              # undef isnand
89              # define isnand(x) isnan ((double)(x))
92            [[return isnand (x);]])],