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Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux	RedHat 5.2 (Apollo)
	infnan(3)

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INFNAN

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
CONFORMING TO

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NAME

infnan − deal with infinite or not-a-number (NaN) result

SYNOPSIS

#include <math.h>

double infnan(int error);

DESCRIPTION

The infnan() function returns a suitable value for infinity and "not-a-number" (NaN) results. The value of error can be ERANGE to represent infinity or anything else to represent NaN. errno is also set.

RETURN VALUE

If error is ERANGE (Infinity), HUGE_VAL is returned.

If error is -ERANGE (-Infinity), -HUGE_VAL is returned.

If error is anything else, NAN is returned.

ERRORS

	ERANGE		The value of error is positive or negative infinity.
	EDOM		The value of error is "not-a-number" (NaN).

CONFORMING TO

BSD 4.3

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infnan(3)