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1.1 ! root 1: .\" Copyright (c) 1983 Regents of the University of California. ! 2: .\" All rights reserved. The Berkeley software License Agreement ! 3: .\" specifies the terms and conditions for redistribution. ! 4: .\" ! 5: .\" @(#)bessel.3f 6.1 (Berkeley) 5/15/85 ! 6: .\" ! 7: .TH BESSEL 3F "May 15, 1985" ! 8: .UC 5 ! 9: .SH NAME ! 10: bessel functions \- of two kinds for integer orders ! 11: .SH SYNOPSIS ! 12: .B function besj0 (x) ! 13: .sp 1 ! 14: .B function besj1 (x) ! 15: .sp 1 ! 16: .B function besjn (n, x) ! 17: .sp 1 ! 18: .B function besy0 (x) ! 19: .sp 1 ! 20: .B function besy1 (x) ! 21: .sp 1 ! 22: .B function besyn (n, x) ! 23: .sp 1 ! 24: .B double precision function dbesj0 (x) ! 25: .br ! 26: .B double precision x ! 27: .sp 1 ! 28: .B double precision function dbesj1 (x) ! 29: .br ! 30: .B double precision x ! 31: .sp 1 ! 32: .B double precision function dbesjn (n, x) ! 33: .br ! 34: .B double precision x ! 35: .sp 1 ! 36: .B double precision function dbesy0 (x) ! 37: .br ! 38: .B double precision x ! 39: .sp 1 ! 40: .B double precision function dbesy1 (x) ! 41: .br ! 42: .B double precision x ! 43: .sp 1 ! 44: .B double precision function dbesyn (n, x) ! 45: .br ! 46: .B double precision x ! 47: .SH DESCRIPTION ! 48: These functions calculate Bessel functions of the first and second kinds ! 49: for real arguments and integer orders. ! 50: .SH DIAGNOSTICS ! 51: Negative arguments cause \fIbesy0, besy1,\fR and \fIbesyn\fR to return a huge ! 52: negative value. The system error code will be set to EDOM (33). ! 53: .SH FILES ! 54: .ie \nM /usr/ucb/lib/libF77.a ! 55: .el /usr/lib/libF77.a ! 56: .SH "SEE ALSO" ! 57: j0(3M), perror(3F)
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