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Footnotes
(1)
The last few digits may vary slightly depending on the compiler and platform used—this is normal.
(2)
Note that the C99 standard only requires the
system isinf
function to return a non-zero value, without the
sign of the infinity. The implementation in some earlier versions of
GSL used the system isinf
function and may have this behavior
on some platforms. Therefore, it is advisable to test the sign of
x separately, if needed, rather than relying the sign of the
return value from gsl_isinf()
.
(3)
Note that the first edition uses different definitions.
(4)
In versions of the
GNU C library prior to the ISO C99 standard,
the type modifier Z
was used instead.
(5)
In versions of the
GNU C library prior to the ISO C99 standard,
the type modifier Z
was used instead.
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