# Manual browser: finite(3)

FINITE(3) | Library Functions Manual | FINITE(3) |

# NAME

**finite**,

**finitef**— tests for finite values

# LIBRARY

Math Library (libm, -lm)# DESCRIPTION

The**finite**() function returns the value 1 when

-infinity <

*x*< +infinity.
Otherwise a zero is returned (that is, |*x*| = infinity or *x* is NaN).

# STANDARDS

The described functions conform to IEEE Std 754-1985. Note that unlike isfinite(3), neither function is present in the ISO C-language standards or in the IEEE POSIX standards.# HISTORY

The**finite**and

**finitef**() functions first appeared in 4.3BSD.

July 28, 2011 | NetBSD 7.0 |