The Intel Math library supports the following special functions:
Description: The annuity function computes the present value factor for an annuity, (1 - (1+x)(-y) ) / x, where x is a rate and y is a period.
errno: ERANGE, for underflow and overflow conditions
Calling interface:
double annuity(double x, double y);
long double annuityl(long double x, long double y);
float annuityf(float x, float y);
Description: The compound function computes the compound interest factor, (1+x)y, where x is a rate and y is a period.
errno: ERANGE, for underflow and overflow conditions
Calling interface:
double compound(double x, double y);
long double compoundl(long double x, long double y);
float compoundf(float x, float y);
Description: The erf function returns the error function value.
Calling interface:
double erf(double x);
long double erfl(long double x);
float erff(float x);
Description: The erfc function returns the complementary error function value.
errno: ERANGE, for underflow conditions
Calling interface:
double erfc(double x);
long double erfcl(long double x);
float erfcf(float x);
Description: The gamma function returns the value of the logarithm of the absolute value of gamma.
errno: ERANGE, for overflow conditions when x is a negative integer.
Calling interface:
double gamma(double x);
long double gammal(long double x);
float gammaf(float x);
Description: The gamma_r function returns the value of the logarithm of the absolute value of gamma. The sign of the gamma function is returned in the integer signgam.
Calling interface:
double gamma_r(double x, int *signgam);
long double gammal_r(long double x, int *signgam);
float gammaf_r(float x, int *signgam);
Description: Computes the Bessel function (of the first kind) of x with order 0.
Calling interface:
double j0(double x);
long double j0l(long double x);
float j0f(float x);
Description: Computes the Bessel function (of the first kind) of x with order 1.
Calling interface:
double j1(double x);
long double j1l(long double x);
float j1f(float x);
Description: Computes the Bessel function (of the first kind) of x with order n.
Calling interface:
double jn(int n, double x);
long double jnl(int n, long double x);
float jnf(int n, float x);
Description: The lgamma function returns the value of the logarithm of the absolute value of gamma.
errno: ERANGE, for overflow conditions, x=0 or negative integers.
Calling interface:
double lgamma(double x);
long double lgammal(long double x);
float lgammaf(float x);
Description: The lgamma_r function returns the value of the logarithm of the absolute value of gamma. The sign of the gamma function is returned in the integer signgam.
errno: ERANGE, for overflow conditions, x=0 or negative integers.
Calling interface:
double lgamma_r(double x, int *signgam);
long double lgammal_r(long double x, int *signgam);
float lgammaf_r(float x, int *signgam);
Description: The tgamma function computes the gamma function of x.
errno: EDOM, for x=0 or negative integers.
Calling interface:
double tgamma(double x);
long double tgammal(long double x);
float tgammaf(float x);
Description: Computes the Bessel function (of the second kind) of x with order 0.
errno: EDOM, for x <= 0
Calling interface:
double y0(double x);
long double y0l(long double x);
float y0f(float x);
Description: Computes the Bessel function (of the second kind) of x with order 1.
errno: EDOM, for x <= 0
Calling interface:
double y1(double x);
long double y1l(long double x);
float y1f(float x);
Description: Computes the Bessel function (of the second kind) of x with order n.
errno: EDOM, for x <= 0
Calling interface:
double yn(int n, double x);
long double ynl(int n, long double x);
float ynf(int n, float x);