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# isnormal

From cppreference.com
< c‎ | numeric‎ | math

Defined in header `<math.h>` |  |
#define isnormal(arg) /* implementation defined */ |  | (since C99)

Determines if the given floating point number `arg` is normal, i.e. is neither zero, subnormal, infinite, nor `NaN`. The macro returns an integral value.

### [edit] Parameters

arg | - | floating point value

### [edit] Return value

Nonzero integral value if `arg` is normal, ​0​ otherwise.

### [edit] See also

fpclassify (C99) | categorizes the given floating point value (function) [edit]
isfinite (C99) | checks if the given number has finite value (function) [edit]
isinf (C99) | checks if the given number is infinite (function) [edit]
isnan (C99) | checks if the given number is NaN (function) [edit]
C++ documentation for isnormal

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