projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| be8ee4f0 C |
1 | J0(3) BSD Programmer's Manual J0(3) |
| 2 | ||
| 3 | N\bNA\bAM\bME\bE | |
| 4 | j\bj0\b0, j\bj1\b1, j\bjn\bn, y\by0\b0, y\by1\b1, y\byn\bn - bessel functions of first and second kind | |
| 5 | ||
| 6 | S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS | |
| 7 | #\b#i\bin\bnc\bcl\blu\bud\bde\be <\b<m\bma\bat\bth\bh.\b.h\bh>\b> | |
| 8 | ||
| 9 | _\bd_\bo_\bu_\bb_\bl_\be | |
| 10 | j\bj0\b0(_\bd_\bo_\bu_\bb_\bl_\be _\bx); | |
| 11 | ||
| 12 | _\bd_\bo_\bu_\bb_\bl_\be | |
| 13 | j\bj1\b1(_\bd_\bo_\bu_\bb_\bl_\be _\bx); | |
| 14 | ||
| 15 | _\bd_\bo_\bu_\bb_\bl_\be | |
| 16 | j\bjn\bn(_\bi_\bn_\bt _\bn, _\bd_\bo_\bu_\bb_\bl_\be _\bx); | |
| 17 | ||
| 18 | _\bd_\bo_\bu_\bb_\bl_\be | |
| 19 | y\by0\b0(_\bd_\bo_\bu_\bb_\bl_\be _\bx); | |
| 20 | ||
| 21 | _\bd_\bo_\bu_\bb_\bl_\be | |
| 22 | y\by1\b1(_\bd_\bo_\bu_\bb_\bl_\be _\bx); | |
| 23 | ||
| 24 | _\bd_\bo_\bu_\bb_\bl_\be | |
| 25 | y\byn\bn(_\bi_\bn_\bt _\bn, _\bd_\bo_\bu_\bb_\bl_\be _\bx); | |
| 26 | ||
| 27 | D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN | |
| 28 | The functions j\bj0\b0() and j\bj1\b1() compute the _\bB_\be_\bs_\bs_\be_\bl _\bf_\bu_\bn_\bc_\bt_\bi_\bo_\bn _\bo_\bf _\bt_\bh_\be _\bf_\bi_\br_\bs_\bt _\bk_\bi_\bn_\bd | |
| 29 | _\bo_\bf _\bt_\bh_\be _\bo_\br_\bd_\be_\br 0 and the _\bo_\br_\bd_\be_\br 1, respectively, for the real value _\bx; the | |
| 30 | function j\bjn\bn() computes the _\bB_\be_\bs_\bs_\be_\bl _\bf_\bu_\bn_\bc_\bt_\bi_\bo_\bn _\bo_\bf _\bt_\bh_\be _\bf_\bi_\br_\bs_\bt _\bk_\bi_\bn_\bd _\bo_\bf _\bt_\bh_\be | |
| 31 | _\bi_\bn_\bt_\be_\bg_\be_\br Bessel0 _\bn for the real value _\bx. | |
| 32 | ||
| 33 | The functions y\by0\b0() and y\by1\b1() compute the linearly independent _\bB_\be_\bs_\bs_\be_\bl | |
| 34 | _\bf_\bu_\bn_\bc_\bt_\bi_\bo_\bn _\bo_\bf _\bt_\bh_\be _\bs_\be_\bc_\bo_\bn_\bd _\bk_\bi_\bn_\bd _\bo_\bf _\bt_\bh_\be _\bo_\br_\bd_\be_\br 0 and the _\bo_\br_\bd_\be_\br 1, respectively, | |
| 35 | for the postive _\bi_\bn_\bt_\be_\bg_\be_\br value _\bx (expressed as a double); the function | |
| 36 | y\byn\bn() computes the _\bB_\be_\bs_\bs_\be_\bl _\bf_\bu_\bn_\bc_\bt_\bi_\bo_\bn _\bo_\bf _\bt_\bh_\be _\bs_\be_\bc_\bo_\bn_\bd _\bk_\bi_\bn_\bd _\bf_\bo_\br _\bt_\bh_\be _\bi_\bn_\bt_\be_\bg_\be_\br | |
| 37 | Bessel0 _\bn for the postive _\bi_\bn_\bt_\be_\bg_\be_\br value _\bx (expressed as a double). | |
| 38 | ||
| 39 | R\bRE\bET\bTU\bUR\bRN\bN V\bVA\bAL\bLU\bUE\bES\bS | |
| 40 | If these functions are successful, the computed value is returned. On the | |
| 41 | VAX and Tahoe architectures, a negative _\bx value results in an error; the | |
| 42 | global variable _\be_\br_\br_\bn_\bo is set to EDOM and a reserve operand fault is gen- | |
| 43 | erated. | |
| 44 | ||
| 45 | S\bSE\bEE\bE A\bAL\bLS\bSO\bO | |
| 46 | math(3), infnan(3) | |
| 47 | ||
| 48 | H\bHI\bIS\bST\bTO\bOR\bRY\bY | |
| 49 | A set of these functions function appeared in Version 7 AT&T UNIX. | |
| 50 | ||
| 51 | 4th Berkeley Distribution June 4, 1993 1 |