Guardian Native C Library Calls Reference Manual (G06.29+, H06.08+, J06.03+)

fdimf(3) Guardian Native C Library Calls Reference Manual
NAME
fdimf - Computes the positive difference between two float values
LIBRARY
H-series and J-series native Guardian processes: $SYSTEM.ZDLLnnn.ZCREDLL
32-bit H-series and J-series OSS processes: /G/system/zdllnnn/zcredll
64-bit H-series and J-series OSS processes: /G/system/zdllnnn/ycredll
SYNOPSIS
#include <math.h>
float fdimf(
float x,
float y
);
PARAMETERS
x Specifies a float value.
y Specifies a float value.
DESCRIPTION
The fdimf() function is a float version of the fdim() function; it takes float arguments and returns
a float result.
The fdimf() function computes the positive difference between x and y.Ifx is greater than y, x -
y is returned. If x is less than or equal to y, positive zero is returned.
NOTES
This function is implemented only for the IEEE_float floating-point option. Applications using
this function cannot be compiled if the specified floating-point option is Tandem_float.
RETURN VALUES
Upon successful completion, the fdimf( ) function returns the positive difference between x and
y.
If x - y is positive and overflows, HUGE_VALF is returned and errno is set to [ERANGE].
If x - y is positive and underflows, 0.0 (zero) is returned.
If x or y is NaN, NaN is returned.
ERRORS
If any of the following conditions occurs, the fdimf( ) function sets errno to the corresponding
value:
[ERANGE] The result would cause an overflow.
RELATED INFORMATION
Functions: fdim(3), fdiml(3), fmin(3), fmax(3).
Files: math(4).
STANDARDS CONFORMANCE
This function conforms to the ISO/IEC 9899:1999 standard.
This function conforms to the IEEE Std 1003.1, 2004 Edition.
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