Namespaces
Variants
Views
Actions

std::isnormal

From cppreference.com
 
 
 
Common mathematical functions
Functions
Basic operations
remainder(C++11)
remquo(C++11)
fma(C++11)
fmax(C++11)
fmin(C++11)
fdim(C++11)
nan
nanf
nanl
(C++11)
(C++11)
(C++11)
Exponential functions
exp
exp2(C++11)
expm1(C++11)
log
log10
log1p(C++11)
log2(C++11)
Power functions
sqrt
cbrt(C++11)
hypot(C++11)
pow
Trigonometric and hyperbolic functions
sinh
cosh
tanh
asinh(C++11)
acosh(C++11)
atanh(C++11)
Error and gamma functions
erf(C++11)
erfc(C++11)
lgamma(C++11)
tgamma(C++11)
Nearest integer floating point operations
ceil
floor
round
lround
llround
(C++11)
(C++11)
(C++11)
trunc(C++11)
nearbyint(C++11)
rint
lrint
llrint
(C++11)
(C++11)
(C++11)
Floating point manipulation functions
ldexp
scalbn
scalbln
(C++11)
(C++11)
ilogb(C++11)
logb(C++11)
frexp
modf
nextafter
nexttoward
(C++11)
(C++11)
copysign(C++11)
Classification
fpclassify(C++11)
isfinite(C++11)
isinf(C++11)
isnan(C++11)
isnormal(C++11)
signbit(C++11)
Macro constants
FP_NORMAL
FP_SUBNORMAL
FP_ZERO
FP_INFINITE
FP_NAN
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
FLT_EVAL_METHOD(C++11)
 
Defined in header <cmath>
int isnormal( float arg );
(since C++11)
int isnormal( double arg );
(since C++11)
int isnormal( long double arg );
(since C++11)

Determines if the given floating point number arg is normal, i.e. is neither zero, subnormal, infinite, nor NaN.

[edit] Parameters

arg - floating point value

[edit] Return value

nonzero value if arg is normal, 0 otherwise

[edit] See also

categorizes the given floating point value
(function) [edit]
(C++11)
checks if the given number has finite value
(function) [edit]
(C++11)
checks if the given number is infinite
(function) [edit]
(C++11)
checks if the given number is NaN
(function) [edit]