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test sign of a real floating-point number

NAME signbit - test sign of a real floating-point number LIBRARY Math library ( libm ... SYNOPSIS #include   int signbit( x ); Feature Test Macro Requirements for glibc (see featur…

copysign(3)

copy sign of a number

HISTORY C99, POSIX.1-2001, 4.3BSD. SEE ALSO signbit

copysignl(3)

copy sign of a number

HISTORY C99, POSIX.1-2001, 4.3BSD. SEE ALSO signbit

copysignf(3)

copy sign of a number

HISTORY C99, POSIX.1-2001, 4.3BSD. SEE ALSO signbit

isnan(3)

floating-point classification macros

ALSO finite (3), INFINITY (3), isgreater (3), signbit

isinf(3)

floating-point classification macros

ALSO finite (3), INFINITY (3), isgreater (3), signbit

isnormal(3)

floating-point classification macros

ALSO finite (3), INFINITY (3), isgreater (3), signbit

isfinite(3)

floating-point classification macros

ALSO finite (3), INFINITY (3), isgreater (3), signbit

fpclassify(3)

floating-point classification macros

ALSO finite (3), INFINITY (3), isgreater (3), signbit

signal(2)
ANSI C signal handling
```
NAME signal - ANSI
```
signal(7)
overview of signals
```
NAME signal - overview
```
sigwait(3)
wait for a signal
```
NAME sigwait - wait
```
signgam(3)
log gamma function
```
NAME lgamma, lgammaf
```
signalfd(2)
create a file descriptor for accepting signals
```
NAME signalfd - create
```

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