C Library – <math.h>

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The math.h header defines various mathematical functions and one macro. All the functions available in this library take double as an argument and return double as the result.

Library Macros

There is only one macro defined in this library −

Sr.No.
Macro & Description

1

HUGE_VAL

This macro is used when the result of a function may not be representable as a floating point number. If magnitude of the correct result is too large to be represented, the function sets errno to ERANGE to indicate a range error, and returns a particular, very large value named by the macro HUGE_VAL or its negation (- HUGE_VAL).

If the magnitude of the result is too small, a value of zero is returned instead. In this case, errno might or might not be set to ERANGE.

Library Functions

Following are the functions defined in the header math.h −

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