Namespaces
Variants
Views
Actions

fdim

From cppreference.com
< c | numeric | math
 
 
 
Common mathematical functions
Functions
Basic operations
remainder(C99)
remquo(C99)
fma(C99)
fmax(C99)
fmin(C99)
fdim(C99)
nan
nanf
nanl
(C99)
(C99)
(C99)
Exponential functions
exp
exp2(C99)
expm1(C99)
log
log10
log1p(C99)
log2(C99)
Power functions
sqrt
cbrt(C99)
hypot(C99)
pow
Trigonometric and hyperbolic functions
sinh
cosh
tanh
asinh(C99)
acosh(C99)
atanh(C99)
Error and gamma functions
erf(C99)
erfc(C99)
lgamma(C99)
tgamma(C99)
Nearest integer floating point operations
ceil
floor
round
lround
llround
(C99)
(C99)
(C99)
trunc(C99)
nearbyint(C99)
rint
lrint
llrint
(C99)
(C99)
(C99)
Floating point manipulation functions
ldexp
scalbn
scalbln
(C99)
(C99)
ilogb(C99)
logb(C99)
Classification
fpclassify(C99)
isfinite(C99)
isinf(C99)
isnan(C99)
isnormal(C99)
signbit(C99)
Macro constants
 
Defined in header <math.h>
float       fdimf( float x, float y );
(since C99)
double      fdim( double x, double y );
(since C99)
long double fdiml( long double x, long double y );
(since C99)

Returns the positive difference between x and y. This could be implemented as fmax (x - y, 0), so if x ≤ y, the result is always equals to 0, otherwise it is x - y.

[edit] Parameters

x, y - floating point value

[edit] Return value

The positive difference value.

[edit] See also

computes absolute value of an integral value (|x|)
(function) [edit]
(C99)
larger of two floating point values
(function) [edit]