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%2Ffdim.html | 63 ------------------------------------ 1 file changed, 63 deletions(-) delete mode 100644 devdocs/c/numeric%2Fmath%2Ffdim.html (limited to 'devdocs/c/numeric%2Fmath%2Ffdim.html') diff --git a/devdocs/c/numeric%2Fmath%2Ffdim.html b/devdocs/c/numeric%2Fmath%2Ffdim.html deleted file mode 100644 index 4d64f3ac..00000000 --- a/devdocs/c/numeric%2Fmath%2Ffdim.html +++ /dev/null @@ -1,63 +0,0 @@ -

fdim, fdimf, fdiml

Defined in header <math.h> 
float       fdimf( float x, float y );
-		 (1) (since C99) 
double      fdim( double x, double y );
-		 (2) (since C99) 
long double fdiml( long double x, long double y );
-		 (3) (since C99)
Defined in header <tgmath.h> 
#define fdim( x, y )
-		 (4) (since C99)
-1-3) Returns the positive difference between x and y, that is, if x>y, returns x-y, otherwise (if x≤y), returns +0.
-4) Type-generic macro: If any argument has type long double, fdiml is called. Otherwise, if any argument has integer type or has type double, fdim is called. Otherwise, fdimf is called.

Parameters

- -
x, y - floating point value

Return value

If successful, returns the positive difference between x and y.

-

If a range error due to overflow occurs, +HUGE_VAL, +HUGE_VALF, or +HUGE_VALL is returned.

-

If a range error due to underflow occurs, the correct value (after rounding) is returned.

-

Error handling

Errors are reported as specified in math_errhandling.

-

If the implementation supports IEEE floating-point arithmetic (IEC 60559),

-

Notes

Equivalent to fmax(x-y, 0) except for the NaN handling requirements.

-

Example

#include <stdio.h>
-#include <math.h>
-#include <errno.h>
-#include <fenv.h>
-// #pragma STDC FENV_ACCESS ON
-int main(void)
-{
-    printf("fdim(4, 1) = %f, fdim(1, 4)=%f\n", fdim(4,1), fdim(1,4));
-    printf("fdim(4,-1) = %f, fdim(1,-4)=%f\n", fdim(4,-1), fdim(1,-4));
-    //error handling
-    errno = 0; feclearexcept(FE_ALL_EXCEPT);
-    printf("fdim(1e308, -1e308) = %f\n", fdim(1e308, -1e308));
-    if(errno == ERANGE) perror("    errno == ERANGE");
-    if(fetestexcept(FE_OVERFLOW)) puts("    FE_OVERFLOW raised");
-}

Possible output:

-
fdim(4, 1) = 3.000000, fdim(1, 4)=0.000000
-fdim(4,-1) = 5.000000, fdim(1,-4)=5.000000
-fdim(1e308, -1e308) = inf
-    errno == ERANGE: Numerical result out of range
-    FE_OVERFLOW raised

References

See also

- - -
-
(C99)
 computes absolute value of an integral value (\(\small{|x|}\)|x|)
(function)
-
(C99)(C99)(C99)
 determines larger of two floating-point values
(function)
C++ documentation for fdim
-

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

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