signbit Function
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signbit Function

 

Determines whether the sign of _X is negative

inline int signbit(
   float _X
) restrict(amp);
inline int signbit(
   double _X
) restrict(amp);

_X

Floating-point value

Returns a nonzero value if and only if the sign of _X is negative

Requirements

Header: amp_math.h

Namespace: Concurrency::precise_math

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