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isnan
core
stdc
math
version(!CRuntime_DigitalMars && !CRuntime_Microsoft && !CRuntime_Glibc && !CRuntime_Musl && !CRuntime_UClibc && !Darwin && FreeBSD)
extern (
C
) @
trusted
nothrow @
nogc
pragma(
mangle
, "__isnanl") pure
int
isnan
(
real
x
)
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core
stdc
math
aliases
double_t
float_t
functions
fpclassify
isfinite
isinf
isnan
isnormal
signbit
variables
FP_ILOGB0
FP_ILOGBNAN
HUGE_VAL
HUGE_VALF
HUGE_VALL
INFINITY
MATH_ERREXCEPT
MATH_ERRNO
NAN
math_errhandling