signbit
From cppreference.com
| Defined in header
<math.h>
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| #define signbit(arg) /* implementation defined */
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(since C99) | |
Determines if the given floating point number arg is negative. The macro returns an integral value.
[edit] Parameters
| arg | - | floating point value |
[edit] Return value
Nonzero integral value if arg is negative, 0 otherwise
[edit] See also
| absolute value of a floating point value (|x|) (function) |
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| (C99)
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copies the sign of a floating point value (function) |
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C++ documentation for signbit
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