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Richard Kenner 1995-12-17 07:08:31 -05:00
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/* fp-test.c - Check that all floating-point operations are available.
Copyright (C) 1995 Free Software Foundation, Inc.
Contributed by Ronald F. Guilmette <rfg@monkeys.com>.
This file is part of GNU CC.
GNU CC 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 2, or (at your option)
any later version.
GNU CC 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 CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* This is a trivial test program which may be useful to people who are
porting the GCC or G++ compilers to a new system. The intent here is
merely to check that all floating-point operations have been provided
by the port. (Note that I say ``provided'' rather than ``implemented''.)
To use this file, simply compile it (with GCC or G++) and then try to
link it in the normal way (also using GCC or G++ respectively). If
all of the floating -point operations (including conversions) have
been provided, then this file will link without incident. If however
one or more of the primitive floating-point operations have not been
properly provided, you will get link-time errors indicating which
floating-point operations are unavailable.
This file will typically be used when porting the GNU compilers to
some system which lacks floating-point hardware, and for which
software emulation routines (for FP ops) are needed in order to
complete the port. */
#if 0
#include <math.h>
#endif
extern double acos (double);
extern double asin (double);
extern double atan (double);
extern double atan2 (double, double);
extern double cos (double);
extern double sin (double);
extern double tan (double);
extern double cosh (double);
extern double sinh (double);
extern double tanh (double);
extern double exp (double);
extern double frexp (double, int *);
extern double ldexp (double, int);
extern double log (double);
extern double log10 (double);
extern double modf (double, double *);
extern double pow (double, double);
extern double sqrt (double);
extern double ceil (double);
extern double fabs (double);
extern double floor (double);
extern double fmod (double, double);
int i1, i2 = 2;
volatile signed char sc;
volatile unsigned char uc;
volatile signed short ss;
volatile unsigned short us;
volatile signed int si;
volatile unsigned int ui;
volatile signed long sl;
volatile unsigned long ul;
volatile float f1 = 1.0, f2 = 1.0, f3 = 1.0;
volatile double d1 = 1.0, d2 = 1.0, d3 = 1.0;
volatile long double D1 = 1.0, D2 = 1.0, D3 = 1.0;
int
main ()
{
/* TYPE: float */
f1 = -f2;
f1 = f2 + f3;
f1 = f2 - f3;
f1 = f2 * f3;
f1 = f2 / f3;
f1 += f2;
f1 -= f2;
f1 *= f2;
f1 /= f2;
si = f1 == f2;
si = f1 != f2;
si = f1 > f2;
si = f1 < f2;
si = f1 >= f2;
si = f1 <= f2;
sc = f1;
uc = f1;
ss = f1;
us = f1;
si = f1;
ui = f1;
sl = f1;
ul = f1;
d1 = f1;
D1 = f1;
f1 = sc;
f1 = uc;
f1 = ss;
f1 = us;
f1 = si;
f1 = ui;
f1 = sl;
f1 = ul;
f1 = d1;
f1 = D1;
d1 = -d2;
d1 = d2 + d3;
d1 = d2 - d3;
d1 = d2 * d3;
d1 = d2 / d3;
d1 += d2;
d1 -= d2;
d1 *= d2;
d1 /= d2;
si = d1 == d2;
si = d1 != d2;
si = d1 > d2;
si = d1 < d2;
si = d1 >= d2;
si = d1 <= d2;
sc = d1;
uc = d1;
ss = d1;
us = d1;
si = d1;
ui = d1;
sl = d1;
ul = d1;
f1 = d1;
D1 = d1;
d1 = sc;
d1 = uc;
d1 = ss;
d1 = us;
d1 = si;
d1 = ui;
d1 = sl;
d1 = ul;
d1 = f1;
d1 = D1;
D1 = -D2;
D1 = D2 + D3;
D1 = D2 - D3;
D1 = D2 * D3;
D1 = D2 / D3;
D1 += D2;
D1 -= D2;
D1 *= D2;
D1 /= D2;
si = D1 == D2;
si = D1 != D2;
si = D1 > D2;
si = D1 < D2;
si = D1 >= D2;
si = D1 <= D2;
sc = D1;
uc = D1;
ss = D1;
us = D1;
si = D1;
ui = D1;
sl = D1;
ul = D1;
f1 = D1;
d1 = D1;
D1 = sc;
D1 = uc;
D1 = ss;
D1 = us;
D1 = si;
D1 = ui;
D1 = sl;
D1 = ul;
D1 = f1;
D1 = d1;
d1 = acos (d2);
d1 = asin (d2);
d1 = atan (d2);
d1 = atan2 (d2, d3);
d1 = cos (d2);
d1 = sin (d2);
d1 = tan (d2);
d1 = cosh (d2);
d1 = sinh (d2);
d1 = tanh (d2);
d1 = exp (d2);
d1 = frexp (d2, &i1);
d1 = ldexp (d2, i2);
d1 = log (d2);
d1 = log10 (d2);
d1 = modf (d2, &d3);
d1 = pow (d2, d3);
d1 = sqrt (d2);
d1 = ceil (d2);
d1 = fabs (d2);
d1 = floor (d2);
d1 = fmod (d2, d3);
return 0;
}