Commit b70021f4 authored by Mike Rowan's avatar Mike Rowan
Browse files

Initial revision

parent 24c5e809
/* Primitive operations on floating point for GNU Emacs Lisp interpreter.
Copyright (C) 1988 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <signal.h>
#include "config.h"
#include "lisp.h"
Lisp_Object Qarith_error;
#ifdef LISP_FLOAT_TYPE
#include <math.h>
/* Nonzero while executing in floating point.
This tells float_error what to do. */
static int in_float;
/* If an argument is out of range for a mathematical function,
that is detected with a signal. Here is the actual argument
value to use in the error message. */
static Lisp_Object float_error_arg;
#define IN_FLOAT(d, num) \
(in_float = 1, float_error_arg = num, (d), in_float = 0)
/* Extract a Lisp number as a `double', or signal an error. */
double
extract_float (num)
Lisp_Object num;
{
CHECK_NUMBER_OR_FLOAT (num, 0);
if (XTYPE (num) == Lisp_Float)
return XFLOAT (num)->data;
return (double) XINT (num);
}
DEFUN ("acos", Facos, Sacos, 1, 1, 0,
"Return the inverse cosine of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = acos (d), num);
return make_float (d);
}
DEFUN ("acosh", Facosh, Sacosh, 1, 1, 0,
"Return the inverse hyperbolic cosine of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = acosh (d), num);
return make_float (d);
}
DEFUN ("asin", Fasin, Sasin, 1, 1, 0,
"Return the inverse sine of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = asin (d), num);
return make_float (d);
}
DEFUN ("asinh", Fasinh, Sasinh, 1, 1, 0,
"Return the inverse hyperbolic sine of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = asinh (d), num);
return make_float (d);
}
DEFUN ("atan", Fatan, Satan, 1, 1, 0,
"Return the inverse tangent of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = atan (d), num);
return make_float (d);
}
DEFUN ("atanh", Fatanh, Satanh, 1, 1, 0,
"Return the inverse hyperbolic tangent of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = atanh (d), num);
return make_float (d);
}
DEFUN ("bessel-j0", Fbessel_j0, Sbessel_j0, 1, 1, 0,
"Return the bessel function j0 of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = j0 (d), num);
return make_float (d);
}
DEFUN ("bessel-j1", Fbessel_j1, Sbessel_j1, 1, 1, 0,
"Return the bessel function j1 of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = j1 (d), num);
return make_float (d);
}
DEFUN ("bessel-jn", Fbessel_jn, Sbessel_jn, 2, 2, 0,
"Return the order N bessel function output jn of ARG.\n\
The first arg (the order) is truncated to an integer.")
(num1, num2)
register Lisp_Object num1, num2;
{
int i1 = extract_float (num1);
double f2 = extract_float (num2);
IN_FLOAT (f2 = jn (i1, f2), num1);
return make_float (f2);
}
DEFUN ("bessel-y0", Fbessel_y0, Sbessel_y0, 1, 1, 0,
"Return the bessel function y0 of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = y0 (d), num);
return make_float (d);
}
DEFUN ("bessel-y1", Fbessel_y1, Sbessel_y1, 1, 1, 0,
"Return the bessel function y1 of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = y1 (d), num);
return make_float (d);
}
DEFUN ("bessel-yn", Fbessel_yn, Sbessel_yn, 2, 2, 0,
"Return the order N bessel function output yn of ARG.\n\
The first arg (the order) is truncated to an integer.")
(num1, num2)
register Lisp_Object num1, num2;
{
int i1 = extract_float (num1);
double f2 = extract_float (num2);
IN_FLOAT (f2 = yn (i1, f2), num1);
return make_float (f2);
}
DEFUN ("cube-root", Fcube_root, Scube_root, 1, 1, 0,
"Return the cube root of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = cbrt (d), num);
return make_float (d);
}
DEFUN ("cos", Fcos, Scos, 1, 1, 0,
"Return the cosine of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = cos (d), num);
return make_float (d);
}
DEFUN ("cosh", Fcosh, Scosh, 1, 1, 0,
"Return the hyperbolic cosine of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = cosh (d), num);
return make_float (d);
}
DEFUN ("erf", Ferf, Serf, 1, 1, 0,
"Return the mathematical error function of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = erf (d), num);
return make_float (d);
}
DEFUN ("erfc", Ferfc, Serfc, 1, 1, 0,
"Return the complementary error function of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = erfc (d), num);
return make_float (d);
}
DEFUN ("exp", Fexp, Sexp, 1, 1, 0,
"Return the exponential base e of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = exp (d), num);
return make_float (d);
}
DEFUN ("expm1", Fexpm1, Sexpm1, 1, 1, 0,
"Return the exp (x)-1 of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = expm1 (d), num);
return make_float (d);
}
DEFUN ("log-gamma", Flog_gamma, Slog_gamma, 1, 1, 0,
"Return the log gamma of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = lgamma (d), num);
return make_float (d);
}
DEFUN ("log", Flog, Slog, 1, 1, 0,
"Return the natural logarithm of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = log (d), num);
return make_float (d);
}
DEFUN ("log10", Flog10, Slog10, 1, 1, 0,
"Return the logarithm base 10 of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = log10 (d), num);
return make_float (d);
}
DEFUN ("log1p", Flog1p, Slog1p, 1, 1, 0,
"Return the log (1+x) of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = log1p (d), num);
return make_float (d);
}
DEFUN ("expt", Fexpt, Sexpt, 2, 2, 0,
"Return the exponential x ** y.")
(num1, num2)
register Lisp_Object num1, num2;
{
double f1, f2;
CHECK_NUMBER_OR_FLOAT (num1, 0);
CHECK_NUMBER_OR_FLOAT (num2, 0);
if ((XTYPE (num1) == Lisp_Int) && /* common lisp spec */
(XTYPE (num2) == Lisp_Int)) /* don't promote, if both are ints */
{ /* this can be improved by pre-calculating */
int acc, x, y; /* some binary powers of x then acumulating */
/* these, therby saving some time. -wsr */
x = XINT (num1);
y = XINT (num2);
acc = 1;
if (y < 0)
{
for (; y < 0; y++)
acc /= x;
}
else
{
for (; y > 0; y--)
acc *= x;
}
return XSET (x, Lisp_Int, acc);
}
f1 = (XTYPE (num1) == Lisp_Float) ? XFLOAT (num1)->data : XINT (num1);
f2 = (XTYPE (num2) == Lisp_Float) ? XFLOAT (num2)->data : XINT (num2);
IN_FLOAT (f1 = pow (f1, f2), num1);
return make_float (f1);
}
DEFUN ("sin", Fsin, Ssin, 1, 1, 0,
"Return the sine of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = sin (d), num);
return make_float (d);
}
DEFUN ("sinh", Fsinh, Ssinh, 1, 1, 0,
"Return the hyperbolic sine of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = sinh (d), num);
return make_float (d);
}
DEFUN ("sqrt", Fsqrt, Ssqrt, 1, 1, 0,
"Return the square root of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = sqrt (d), num);
return make_float (d);
}
DEFUN ("tan", Ftan, Stan, 1, 1, 0,
"Return the tangent of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = tan (d), num);
return make_float (d);
}
DEFUN ("tanh", Ftanh, Stanh, 1, 1, 0,
"Return the hyperbolic tangent of ARG.")
(num)
register Lisp_Object num;
{
double d = extract_float (num);
IN_FLOAT (d = tanh (d), num);
return make_float (d);
}
DEFUN ("abs", Fabs, Sabs, 1, 1, 0,
"Return the absolute value of ARG.")
(num)
register Lisp_Object num;
{
CHECK_NUMBER_OR_FLOAT (num, 0);
if (XTYPE (num) == Lisp_Float)
IN_FLOAT (num = make_float (fabs (XFLOAT (num)->data)), num);
else if (XINT (num) < 0)
XSETINT (num, - XFASTINT (num));
return num;
}
DEFUN ("float", Ffloat, Sfloat, 1, 1, 0,
"Return the floating point number equal to ARG.")
(num)
register Lisp_Object num;
{
CHECK_NUMBER_OR_FLOAT (num, 0);
if (XTYPE (num) == Lisp_Int)
return make_float ((double) XINT (num));
else /* give 'em the same float back */
return num;
}
DEFUN ("logb", Flogb, Slogb, 1, 1, 0,
"Returns the integer that is the base 2 log of ARG.\n\
This is the same as the exponent of a float.")
(num)
Lisp_Object num;
{
Lisp_Object val;
double f;
CHECK_NUMBER_OR_FLOAT (num, 0);
f = (XTYPE (num) == Lisp_Float) ? XFLOAT (num)->data : XINT (num);
IN_FLOAT (val = logb (f), num);
XSET (val, Lisp_Int, val);
return val;
}
/* the rounding functions */
DEFUN ("ceiling", Fceiling, Sceiling, 1, 1, 0,
"Return the smallest integer no less than ARG. (Round toward +inf.)")
(num)
register Lisp_Object num;
{
CHECK_NUMBER_OR_FLOAT (num, 0);
if (XTYPE (num) == Lisp_Float)
IN_FLOAT (XSET (num, Lisp_Int, ceil (XFLOAT (num)->data)), num);
return num;
}
DEFUN ("floor", Ffloor, Sfloor, 1, 1, 0,
"Return the largest integer no greater than ARG. (Round towards -inf.)")
(num)
register Lisp_Object num;
{
CHECK_NUMBER_OR_FLOAT (num, 0);
if (XTYPE (num) == Lisp_Float)
IN_FLOAT (XSET (num, Lisp_Int, floor (XFLOAT (num)->data)), num);
return num;
}
DEFUN ("round", Fround, Sround, 1, 1, 0,
"Return the nearest integer to ARG.")
(num)
register Lisp_Object num;
{
CHECK_NUMBER_OR_FLOAT (num, 0);
if (XTYPE (num) == Lisp_Float)
IN_FLOAT (XSET (num, Lisp_Int, rint (XFLOAT (num)->data)), num);
return num;
}
DEFUN ("truncate", Ftruncate, Struncate, 1, 1, 0,
"Truncate a floating point number to an int.\n\
Rounds the value toward zero.")
(num)
register Lisp_Object num;
{
CHECK_NUMBER_OR_FLOAT (num, 0);
if (XTYPE (num) == Lisp_Float)
XSET (num, Lisp_Int, (int) XFLOAT (num)->data);
return num;
}
#ifdef BSD
static
float_error (signo)
int signo;
{
if (! in_float)
fatal_error_signal (signo);
#ifdef BSD4_1
sigrelse (SIGILL);
#else /* not BSD4_1 */
sigsetmask (0);
#endif /* not BSD4_1 */
in_float = 0;
Fsignal (Qarith_error, Fcons (float_error_arg, Qnil));
}
/* Another idea was to replace the library function `infnan'
where SIGILL is signaled. */
#endif /* BSD */
init_floatfns ()
{
signal (SIGILL, float_error);
in_float = 0;
}
syms_of_floatfns ()
{
defsubr (&Sacos);
defsubr (&Sacosh);
defsubr (&Sasin);
defsubr (&Sasinh);
defsubr (&Satan);
defsubr (&Satanh);
defsubr (&Sbessel_y0);
defsubr (&Sbessel_y1);
defsubr (&Sbessel_yn);
defsubr (&Sbessel_j0);
defsubr (&Sbessel_j1);
defsubr (&Sbessel_jn);
defsubr (&Scube_root);
defsubr (&Scos);
defsubr (&Scosh);
defsubr (&Serf);
defsubr (&Serfc);
defsubr (&Sexp);
defsubr (&Sexpm1);
defsubr (&Slog_gamma);
defsubr (&Slog);
defsubr (&Slog10);
defsubr (&Slog1p);
defsubr (&Sexpt);
defsubr (&Ssin);
defsubr (&Ssinh);
defsubr (&Ssqrt);
defsubr (&Stan);
defsubr (&Stanh);
defsubr (&Sabs);
defsubr (&Sfloat);
defsubr (&Slogb);
defsubr (&Sceiling);
defsubr (&Sfloor);
defsubr (&Sround);
defsubr (&Struncate);
}
#else /* not LISP_FLOAT_TYPE */
init_floatfns ()
{}
syms_of_floatfns ()
{}
#endif /* not LISP_FLOAT_TYPE */
/* IBM has disclaimed copyright on this module. */
/***************************************************************/
/* */
/* Function: hftctl */
/* */
/* Syntax: */
/* #include <sys/ioctl.h> */
/* #include <sys/hft.h> */
/* */
/* int hftctl(fildes, request, arg ) */
/* int fildes, request ; */
/* char *arg ; */
/* */
/* Description: */
/* */
/* Does the following: */
/* 1. determines if fildes is pty */
/* does normal ioctl it is not */
/* 2. places fildes into raw mode */
/* 3. converts ioctl arguments to datastream */
/* 4. waits for 2 secs for acknowledgement before */
/* timimg out. */
/* 5. places response in callers buffer ( just like */
/* ioctl. */
/* 6. returns fildes to its original mode */
/* */
/* User of this program should review steps 1,4, and 3. */
/* hftctl makes no check on the request type. It must be */
/* a HFT ioctl that is supported remotely. */
/* This program will use the SIGALRM and alarm(2). Any */
/* Previous alarms are lost. */
/* */
/* Users of this program are free to modify it any way */
/* they want. */
/* */
/* Return Value: */
/* */
/* If ioctl fails, a value of -1 is returned and errno */
/* is set to indicate the error. */
/* */
/***************************************************************/
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <setjmp.h>
#include <sys/ioctl.h>
#include <sys/signal.h>
#include <sys/devinfo.h>
#include <termio.h>
#include <sys/hft.h>
#include <termios.h>
#include <sys/tty.h>
/* #include <sys/pty.h> */
#define REMOTE 0x01
#undef ioctl
static char SCCSid[] = "com/gnuemacs/src,3.1,9021-90/05/03-5/3/90" ;
/*************** LOCAL DEFINES **********************************/
typedef int (*FUNC)() ; /* pointer to a function */
#define QDEV ((HFQPDEVCH<<8)|HFQPDEVCL)
#define QLOC ((HFQLOCCH<<8)|HFQLOCCL)
#define QPS ((HFQPRESCH<<8)|HFQPRESCL)
/*************** EXTERNAL / GLOBAL DATA AREA ********************/
int hfqry() ;
int hfskbd() ;
char *malloc() ;
extern int errno ;