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[linuxjm/jm.git] / manual / GNU_bc / contrib / man1 / bc.1

.\"
.\" bc.1 - the *roff document processor source for the bc manual
.\"
.\" This file is part of GNU bc.
.\" Copyright (C) 1991-1994, 1997, 2000 Free Software Foundation, Inc.
.\"
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.\" Computer Science Department, 9062
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.\" %FreeBSD: src/contrib/bc/doc/bc.1,v 1.4.6.1 2001/03/04 09:34:56 kris Exp %
.\" $FreeBSD: doc/ja_JP.eucJP/man/man1/bc.1,v 1.6 2001/05/14 01:07:21 horikawa Exp $
.\"
.TH bc 1 .\" "Command Manual" v1.06 "Sept 12, 2000"
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bc - Ǥ°ÕÀºÅ٤η׻»¸À¸ì
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define d (n) { return (2*n); }
define d (n)
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\fR
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scale = 20

/* Uses the fact that e^x = (e^(x/2))^2
   When x is small enough, we use the series:
     e^x = 1 + x + x^2/2! + x^3/3! + ...
*/

define e(x) {
  auto  a, d, e, f, i, m, v, z

  /* Check the sign of x. */
  if (x<0) {
    m = 1
    x = -x
  }

  /* Precondition x. */
  z = scale;
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  while (x > 1) {
    f += 1;
    x /= 2;
  }

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  a = x
  d = 1

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      if (m) return (1/v);
      return (v/1);
    }
    v += e
  }
}
\fR
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\f(CW
scale=2
print "\enCheck book program!\en"
print "  Remember, deposits are negative transactions.\en"
print "  Exit by a 0 transaction.\en\en"

print "Initial balance? "; bal = read()
bal /= 1
print "\en"
while (1) {
  "current balance = "; bal
  "transaction? "; trans = read()
  if (trans == 0) break;
  bal -= trans
  bal /= 1
}
quit
\fR
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define f (x) {
  if (x <= 1) return (1);
  return (f(x-1) * x);
}
\fR
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