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- isnan C Library Procedures isnan
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- NNAAMMEE
- iszero, isnormal, issubnormal, signbit - Determine proper-
- ties of IEE double-precision floating point numbers.
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- SSYYNNOOPPSSIISS
- int
- iisszzeerroo(_v_a_l_u_e)
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- int
- iissnnoorrmmaall(_v_a_l_u_e)
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- int
- iissssuubbnnoorrmmaall(_v_a_l_u_e)
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- int
- ssiiggnnbbiitt(_v_a_l_u_e)
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- AARRGGUUMMEENNTTSS
- double _v_a_l_u_e (in) Double-precision floating
- point number to check.
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- DDEESSCCRRIIPPTTIIOONN
- iissnnoorrmmaall returns 1 if its argument is an IEEE double-
- precision normal floating-point number. iissnnoorrmmaall returns 0
- otherwise.
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- iissssuubbnnoorrmmaall returns 1 if its argument is an IEEE double-
- precision subnormal floating-point number. iissnnoorrmmaall returns
- 0 otherwise.
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- iisszzeerroo returns 1 if its argument is an IEEE double-precision
- 0. iissnnoorrmmaall returns 0 otherwise.
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- ssiiggnnbbiitt returns 1 if its argument is an IEEE double-
- precision floating-point number with sign bit set. iissnnoorrmmaall
- returns 0 otherwise.
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- KKEEYYWWOORRDDSS
- not a number, infinity, IEEE, double
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- Sprite v.1.0 Printed: August 27, 1991 1
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