<math.h>¶
Floating-point constants, classification macros and libm declarations.
#include <math.h>
Constants¶
Functions¶
acos¶
double acos(double x);
Arc cosine of x, in radians.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
asin¶
double asin(double x);
Arc sine of x, in radians.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
atan¶
double atan(double x);
Arc tangent of x, in radians.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
atan2¶
double atan2(double y, double x);
Arc tangent of y / x, using both signs to pick the quadrant.
| Parameter | Direction | Description |
|---|---|---|
y |
in | Argument. |
x |
in | Argument. |
Returns: The result.
ceil¶
double ceil(double x);
Smallest integer value not below x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
cos¶
double cos(double x);
Cosine of x radians.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
cosh¶
double cosh(double x);
Hyperbolic cosine of x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
exp¶
double exp(double x);
e raised to x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
floor¶
double floor(double x);
Largest integer value not above x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
fmod¶
double fmod(double x, double y);
Remainder of x / y, with the sign of x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
y |
in | Argument. |
Returns: The result.
frexp¶
double frexp(double x, int *exponent);
Splits x into a fraction in [0.5, 1) and a power of two.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
exponent |
out | Receives the power of two. |
Returns: The fraction.
ldexp¶
double ldexp(double x, int exponent);
x times 2 raised to exponent.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
exponent |
in | Power of two. |
Returns: The result.
log¶
double log(double x);
Natural logarithm of x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
log10¶
double log10(double x);
Base-10 logarithm of x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
modf¶
double modf(double x, double *ipart);
Splits x into integer and fractional parts with the sign of x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
ipart |
out | Receives the integer part. |
Returns: The fractional part.
pow¶
double pow(double x, double y);
x raised to y.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
y |
in | Argument. |
Returns: The result.
sin¶
double sin(double x);
Sine of x radians.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
sinh¶
double sinh(double x);
Hyperbolic sine of x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
sqrt¶
double sqrt(double x);
Square root of x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
tan¶
double tan(double x);
Tangent of x radians.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
tanh¶
double tanh(double x);
Hyperbolic tangent of x.
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
acosl¶
long double acosl(long double x);
Arc cosine of x, in radians.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
asinl¶
long double asinl(long double x);
Arc sine of x, in radians.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
atanl¶
long double atanl(long double x);
Arc tangent of x, in radians.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
atan2l¶
long double atan2l(long double y, long double x);
Arc tangent of y / x, using both signs to pick the quadrant.
(long double)
| Parameter | Direction | Description |
|---|---|---|
y |
in | Argument. |
x |
in | Argument. |
Returns: The result.
ceill¶
long double ceill(long double x);
Smallest integer value not below x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
cosl¶
long double cosl(long double x);
Cosine of x radians.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
coshl¶
long double coshl(long double x);
Hyperbolic cosine of x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
expl¶
long double expl(long double x);
e raised to x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
floorl¶
long double floorl(long double x);
Largest integer value not above x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
fmodl¶
long double fmodl(long double x, long double y);
Remainder of x / y, with the sign of x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
y |
in | Argument. |
Returns: The result.
frexpl¶
long double frexpl(long double x, int *exponent);
Splits x into a fraction in [0.5, 1) and a power of two.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
exponent |
out | Receives the power of two. |
Returns: The fraction.
ldexpl¶
long double ldexpl(long double x, int exponent);
x times 2 raised to exponent.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
exponent |
in | Power of two. |
Returns: The result.
logl¶
long double logl(long double x);
Natural logarithm of x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
log10l¶
long double log10l(long double x);
Base-10 logarithm of x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
modfl¶
long double modfl(long double x, long double *ipart);
Splits x into integer and fractional parts with the sign of x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
ipart |
out | Receives the integer part. |
Returns: The fractional part.
powl¶
long double powl(long double x, long double y);
x raised to y.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
y |
in | Argument. |
Returns: The result.
sinl¶
long double sinl(long double x);
Sine of x radians.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
sinhl¶
long double sinhl(long double x);
Hyperbolic sine of x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
sqrtl¶
long double sqrtl(long double x);
Square root of x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
tanl¶
long double tanl(long double x);
Tangent of x radians.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.
tanhl¶
long double tanhl(long double x);
Hyperbolic tangent of x.
(long double)
| Parameter | Direction | Description |
|---|---|---|
x |
in | Argument. |
Returns: The result.