isinf man page on 4.4BSD

Man page or keyword search:  
man Server   1065 pages
apropos Keyword Search (all sections)
Output format
4.4BSD logo
[printable version]

ISINF(3)		 BSD Library Functions Manual		      ISINF(3)

NAME
     isinf, isnan — test for infinity or not-a-number

SYNOPSIS
     int
     isinf(double);

     int
     isnan(double);

DESCRIPTION
     The isninf() function returns 1 if the number is “∞”, otherwise 0.

     The isnan() function returns 1 if the number is “not-a-number”, otherwise
     0.

SEE ALSO
     math(3)

     IEEE Standard for Binary Floating-Point Arithmetic, Std 754-1985, ANSI.

BUGS
     Neither the VAX nor the Tahoe floating point have distinguished values
     for either infinity or not-a-number.  These routines always return 0 on
     those architectures.

BSD			       January 29, 1994				   BSD
[top]

List of man pages available for 4.4BSD

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
...................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net