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50 lines
929 B
C
50 lines
929 B
C
/*
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* infinity () returns the representation of infinity.
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* Added by Cygnus Support.
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*/
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/*
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FUNCTION
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<<infinity>>, <<infinityf>>--representation of infinity
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INDEX
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infinity
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INDEX
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infinityf
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ANSI_SYNOPSIS
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#include <math.h>
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double infinity(void);
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float infinityf(void);
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DESCRIPTION
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<<infinity>> and <<infinityf>> return the special number IEEE
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infinity in double- and single-precision arithmetic
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respectively.
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PORTABILITY
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<<infinity>> and <<infinityf>> are neither standard C nor POSIX. C and
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POSIX require macros HUGE_VAL and HUGE_VALF to be defined in math.h, which
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Newlib defines to be infinities corresponding to these archaic infinity()
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and infinityf() functions in floating-point implementations which do have
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infinities.
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QUICKREF
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infinity - pure
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*/
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#include "fdlibm.h"
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#ifndef _DOUBLE_IS_32BITS
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double infinity()
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{
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double x;
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INSERT_WORDS(x,0x7ff00000,0);
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return x;
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}
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#endif /* _DOUBLE_IS_32BITS */
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