# besy3(3f) [bsd man page]

```BESSEL(3F)																BESSEL(3F)

NAME
bessel functions - of two kinds for integer orders

SYNOPSIS
function besj0 (x)

function besj1 (x)

function besjn (n, x)

function besy0 (x)

function besy1 (x)

function besyn (n, x)

double precision function dbesj0 (x)
double precision x

double precision function dbesj1 (x)
double precision x

double precision function dbesjn (n, x)
double precision x

double precision function dbesy0 (x)
double precision x

double precision function dbesy1 (x)
double precision x

double precision function dbesyn (n, x)
double precision x

DESCRIPTION
These functions calculate Bessel functions of the first and second kinds for real arguments and integer orders.

DIAGNOSTICS
Negative arguments cause besy0, besy1, and besyn to return a huge negative value. The system error code will be set to EDOM(33).

FILES
/usr/lib/libF77.a

j0(3M), perror(3F)

4.2 Berkeley Distribution					   May 15, 1985 							BESSEL(3F)```

## Check Out this Related Man Page

```FLOAT(3)						   BSD Library Functions Manual 						  FLOAT(3)

NAME
float -- functions with single-precision floating-point arguments

DESCRIPTION
The following functions are available in single precision. The functions conform to the ISO/IEC 9899:1999(E) standard. They are similar to
the corresponding double-precision functions (which have the same name, without the "f" at the end). The double-precision functions have
their own pages. Wherever the double-precision functions use a double-precision floating-point value (as an argument or return value), these
functions use a single-precision floating-point value.

To use these functions you must add an additional flag to the link step that produces the executable binary. Specify "-lmx".

acosf()

acoshf()

asinf()

asinhf()

atanf()

atan2f()

atanhf()

cbrtf()

cosf()

coshf()

erff()

erfcf()

hypotf()

logf()

log2f()

log10f()

log1p()

powf()

sinf()

sinhf()

sqrtf()

tanf()

tanhf()

The following functions are also available in single precision. The functions conform to the ISO/IEC 9899:1999(E) standard. Each one has its
own page, which it shares with its corresponding double-precision function (which has the same name, without the "f" on the end). The page
can be found under both names.

You do not need to specify the "-lmx" flag to use these functions.

ceilf()

copysignf()

expf()

exp2f()

expm1f()

fabsf()

fdimf()

floorf()

fmaf()

fmaxf()

fminf()

fmodf()

frexpf()

ilogbf()

ldexpf()

lgammaf()

llrintf()

llroundf()

logbf()

lrintf()

lround()

modff()

nanf()

nextafterf()

remainderf()

remquof()

rintf()

roundf()

scalblnf()

scalbnf()

tgammaf()

truncf()

BSD								  August 13, 2003							       BSD```
Man Page

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