Open64: osprey/kg++fe/gnu/fp-test.c Source File

00001 /* fp-test.c - Check that all floating-point operations are available.
00002    Copyright (C) 1995, 2000 Free Software Foundation, Inc.
00003    Contributed by Ronald F. Guilmette <rfg@monkeys.com>.
00004 
00005    This file is part of GCC.
00006 
00007    GCC is free software; you can redistribute it and/or modify it
00008    under the terms of the GNU General Public License as published by
00009    the Free Software Foundation; either version 2, or (at your option)
00010    any later version.
00011 
00012    GCC is distributed in the hope that it will be useful, but WITHOUT
00013    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
00014    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
00015    License for more details.
00016 
00017    You should have received a copy of the GNU General Public License
00018    along with GCC; see the file COPYING.  If not, write to the Free
00019    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
00020    02111-1307, USA.  */
00021 
00022 /* This is a trivial test program which may be useful to people who are
00023    porting the GCC or G++ compilers to a new system.  The intent here is
00024    merely to check that all floating-point operations have been provided
00025    by the port. (Note that I say ``provided'' rather than ``implemented''.)
00026 
00027    To use this file, simply compile it (with GCC or G++) and then try to
00028    link it in the normal way (also using GCC or G++ respectively).  If
00029    all of the floating -point operations (including conversions) have
00030    been provided, then this file will link without incident.  If however
00031    one or more of the primitive floating-point operations have not been
00032    properly provided, you will get link-time errors indicating which
00033    floating-point operations are unavailable.
00034 
00035    This file will typically be used when porting the GNU compilers to
00036    some system which lacks floating-point hardware, and for which
00037    software emulation routines (for FP ops) are needed in order to
00038    complete the port.  */
00039 
00040 #if 0
00041 #include <math.h>
00042 #endif
00043 
00044 extern double acos (double);
00045 extern double asin (double);
00046 extern double atan (double);
00047 extern double atan2 (double, double);
00048 extern double cos (double);
00049 extern double sin (double);
00050 extern double tan (double);
00051 extern double cosh (double);
00052 extern double sinh (double);
00053 extern double tanh (double);
00054 extern double exp (double);
00055 extern double frexp (double, int *);
00056 extern double ldexp (double, int);
00057 extern double log (double);
00058 extern double log10 (double);
00059 extern double modf (double, double *);
00060 extern double pow (double, double);
00061 extern double sqrt (double);
00062 extern double ceil (double);
00063 extern double fabs (double);
00064 extern double floor (double);
00065 extern double fmod (double, double);
00066 
00067 int i1, i2 = 2;
00068 
00069 volatile signed char sc;
00070 volatile unsigned char uc;
00071 
00072 volatile signed short ss;
00073 volatile unsigned short us;
00074 
00075 volatile signed int si;
00076 volatile unsigned int ui;
00077 
00078 volatile signed long sl;
00079 volatile unsigned long ul;
00080 
00081 volatile float f1 = 1.0, f2 = 1.0, f3 = 1.0;
00082 volatile double d1 = 1.0, d2 = 1.0, d3 = 1.0;
00083 volatile long double D1 = 1.0, D2 = 1.0, D3 = 1.0;
00084 
00085 int
00086 main ()
00087 {
00088   /* TYPE: float */
00089 
00090   f1 = -f2;
00091   f1 = f2 + f3;
00092   f1 = f2 - f3;
00093   f1 = f2 * f3;
00094   f1 = f2 / f3;
00095   f1 += f2;
00096   f1 -= f2;
00097   f1 *= f2;
00098   f1 /= f2;
00099 
00100   si = f1 == f2;
00101   si = f1 != f2;
00102   si = f1 > f2;
00103   si = f1 < f2;
00104   si = f1 >= f2;
00105   si = f1 <= f2;
00106 
00107   si = __builtin_isgreater (f1, f2);
00108   si = __builtin_isgreaterequal (f1, f2);
00109   si = __builtin_isless (f1, f2);
00110   si = __builtin_islessequal (f1, f2);
00111   si = __builtin_islessgreater (f1, f2);
00112   si = __builtin_isunordered (f1, f2);
00113 
00114   sc = f1;
00115   uc = f1;
00116   ss = f1;
00117   us = f1;
00118   si = f1;
00119   ui = f1;
00120   sl = f1;
00121   ul = f1;
00122   d1 = f1;
00123   D1 = f1;
00124 
00125   f1 = sc;
00126   f1 = uc;
00127   f1 = ss;
00128   f1 = us;
00129   f1 = si;
00130   f1 = ui;
00131   f1 = sl;
00132   f1 = ul;
00133   f1 = d1;
00134   f1 = D1;
00135 
00136   d1 = -d2;
00137   d1 = d2 + d3;
00138   d1 = d2 - d3;
00139   d1 = d2 * d3;
00140   d1 = d2 / d3;
00141   d1 += d2;
00142   d1 -= d2;
00143   d1 *= d2;
00144   d1 /= d2;
00145 
00146   si = d1 == d2;
00147   si = d1 != d2;
00148   si = d1 > d2;
00149   si = d1 < d2;
00150   si = d1 >= d2;
00151   si = d1 <= d2;
00152 
00153   si = __builtin_isgreater (d1, d2);
00154   si = __builtin_isgreaterequal (d1, d2);
00155   si = __builtin_isless (d1, d2);
00156   si = __builtin_islessequal (d1, d2);
00157   si = __builtin_islessgreater (d1, d2);
00158   si = __builtin_isunordered (d1, d2);
00159 
00160   sc = d1;
00161   uc = d1;
00162   ss = d1;
00163   us = d1;
00164   si = d1;
00165   ui = d1;
00166   sl = d1;
00167   ul = d1;
00168   f1 = d1;
00169   D1 = d1;
00170 
00171   d1 = sc;
00172   d1 = uc;
00173   d1 = ss;
00174   d1 = us;
00175   d1 = si;
00176   d1 = ui;
00177   d1 = sl;
00178   d1 = ul;
00179   d1 = f1;
00180   d1 = D1;
00181 
00182   D1 = -D2;
00183   D1 = D2 + D3;
00184   D1 = D2 - D3;
00185   D1 = D2 * D3;
00186   D1 = D2 / D3;
00187   D1 += D2;
00188   D1 -= D2;
00189   D1 *= D2;
00190   D1 /= D2;
00191 
00192   si = D1 == D2;
00193   si = D1 != D2;
00194   si = D1 > D2;
00195   si = D1 < D2;
00196   si = D1 >= D2;
00197   si = D1 <= D2;
00198 
00199   si = __builtin_isgreater (D1, D2);
00200   si = __builtin_isgreaterequal (D1, D2);
00201   si = __builtin_isless (D1, D2);
00202   si = __builtin_islessequal (D1, D2);
00203   si = __builtin_islessgreater (D1, D2);
00204   si = __builtin_isunordered (D1, D2);
00205 
00206   sc = D1;
00207   uc = D1;
00208   ss = D1;
00209   us = D1;
00210   si = D1;
00211   ui = D1;
00212   sl = D1;
00213   ul = D1;
00214   f1 = D1;
00215   d1 = D1;
00216 
00217   D1 = sc;
00218   D1 = uc;
00219   D1 = ss;
00220   D1 = us;
00221   D1 = si;
00222   D1 = ui;
00223   D1 = sl;
00224   D1 = ul;
00225   D1 = f1;
00226   D1 = d1;
00227 
00228   d1 = acos (d2);
00229   d1 = asin (d2);
00230   d1 = atan (d2);
00231   d1 = atan2 (d2, d3);
00232   d1 = cos (d2);
00233   d1 = sin (d2);
00234   d1 = tan (d2);
00235   d1 = cosh (d2);
00236   d1 = sinh (d2);
00237   d1 = tanh (d2);
00238   d1 = exp (d2);
00239   d1 = frexp (d2, &i1);
00240   d1 = ldexp (d2, i2);
00241   d1 = log (d2);
00242   d1 = log10 (d2);
00243   d1 = modf (d2, &d3);
00244   d1 = pow (d2, d3);
00245   d1 = sqrt (d2);
00246   d1 = ceil (d2);
00247   d1 = fabs (d2);
00248   d1 = floor (d2);
00249   d1 = fmod (d2, d3);
00250 
00251   return 0;
00252 }