From 82ba818ff456bcd6d56a06226e3f27e98fbb55c3 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Thu, 14 Aug 2025 22:58:58 -0500 Subject: removing all downloaded devdocs files --- devdocs/c/numeric%2Fmath%2Fsignbit.html | 35 --------------------------------- 1 file changed, 35 deletions(-) delete mode 100644 devdocs/c/numeric%2Fmath%2Fsignbit.html (limited to 'devdocs/c/numeric%2Fmath%2Fsignbit.html') diff --git a/devdocs/c/numeric%2Fmath%2Fsignbit.html b/devdocs/c/numeric%2Fmath%2Fsignbit.html deleted file mode 100644 index dc7e42da..00000000 --- a/devdocs/c/numeric%2Fmath%2Fsignbit.html +++ /dev/null @@ -1,35 +0,0 @@ -

signbit

Defined in header <math.h> 
#define signbit( arg ) /* implementation defined */
-		 (since C99)

Determines if the given floating point number arg is negative. The macro returns an integral value.

-

Parameters

- -
arg - floating point value

Return value

Nonzero integral value if arg is negative, ​0​ otherwise.

-

Notes

This macro detects the sign bit of zeroes, infinities, and NaNs. Along with copysign, this macro is one of the only two portable ways to examine the sign of a NaN.

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Example

#include <math.h>
-#include <stdio.h>
- 
-int main(void)
-{
-    printf("signbit(+0.0) = %d\n", signbit(+0.0));
-    printf("signbit(-0.0) = %d\n", signbit(-0.0));
-}

Possible output:

-
signbit(+0.0) = 0
-signbit(-0.0) = 128

References

See also

- - -
-
(C99)(C99)
 computes absolute value of a floating-point value (\(\small{|x|}\)|x|)
(function)
-
(C99)(C99)(C99)
 produces a value with the magnitude of a given value and the sign of another given value
(function)
C++ documentation for signbit
-

- © cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
- https://en.cppreference.com/w/c/numeric/math/signbit -

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