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- #ifndef _MATH_H
- # error "Never use <bits/huge_vall.h> directly; include <math.h> instead."
- #endif
- #if __GNUC_PREREQ(3,3)
- # define HUGE_VALL (__builtin_huge_vall())
- #else
- # define HUGE_VALL ((long double) HUGE_VAL)
- #endif
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