Você não pode selecionar mais de 25 tópicos
Os tópicos devem começar com uma letra ou um número, podem incluir traços ('-') e podem ter até 35 caracteres.
124 linhas
3.3 KiB
124 linhas
3.3 KiB
/* Testing Code */
|
|
|
|
#include <limits.h>
|
|
#include <math.h>
|
|
|
|
/* Routines used by floation point test code */
|
|
|
|
/* Convert from bit level representation to floating point number */
|
|
float u2f(unsigned u) {
|
|
union {
|
|
unsigned u;
|
|
float f;
|
|
} a;
|
|
a.u = u;
|
|
return a.f;
|
|
}
|
|
|
|
/* Convert from floating point number to bit-level representation */
|
|
unsigned f2u(float f) {
|
|
union {
|
|
unsigned u;
|
|
float f;
|
|
} a;
|
|
a.f = f;
|
|
return a.u;
|
|
}
|
|
|
|
/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
/* This header is separate from features.h so that the compiler can
|
|
include it implicitly at the start of every compilation. It must
|
|
not itself include <features.h> or any other header that includes
|
|
<features.h> because the implicit include comes before any feature
|
|
test macros that may be defined in a source file before it first
|
|
explicitly includes a system header. GCC knows the name of this
|
|
header in order to preinclude it. */
|
|
/* glibc's intent is to support the IEC 559 math functionality, real
|
|
and complex. If the GCC (4.9 and later) predefined macros
|
|
specifying compiler intent are available, use them to determine
|
|
whether the overall intent is to support these features; otherwise,
|
|
presume an older compiler has intent to support these features and
|
|
define these macros by default. */
|
|
/* wchar_t uses Unicode 10.0.0. Version 10.0 of the Unicode Standard is
|
|
synchronized with ISO/IEC 10646:2017, fifth edition, plus
|
|
the following additions from Amendment 1 to the fifth edition:
|
|
- 56 emoji characters
|
|
- 285 hentaigana
|
|
- 3 additional Zanabazar Square characters */
|
|
//1
|
|
int test_bitXor(int x, int y)
|
|
{
|
|
return x^y;
|
|
}
|
|
int test_tmin(void) {
|
|
return 0x80000000;
|
|
}
|
|
//2
|
|
int test_isTmax(int x) {
|
|
return x == 0x7FFFFFFF;
|
|
}
|
|
int test_allOddBits(int x) {
|
|
int i;
|
|
for (i = 1; i < 32; i+=2)
|
|
if ((x & (1<<i)) == 0)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
int test_negate(int x) {
|
|
return -x;
|
|
}
|
|
//3
|
|
int test_isAsciiDigit(int x) {
|
|
return (0x30 <= x) && (x <= 0x39);
|
|
}
|
|
int test_conditional(int x, int y, int z)
|
|
{
|
|
return x?y:z;
|
|
}
|
|
int test_isLessOrEqual(int x, int y)
|
|
{
|
|
return x <= y;
|
|
}
|
|
//4
|
|
int test_logicalNeg(int x)
|
|
{
|
|
return !x;
|
|
}
|
|
int test_howManyBits(int x) {
|
|
unsigned int a, cnt;
|
|
x = x<0 ? -x-1 : x;
|
|
a = (unsigned int)x;
|
|
for (cnt=0; a; a>>=1, cnt++)
|
|
;
|
|
return (int)(cnt + 1);
|
|
}
|
|
//float
|
|
unsigned test_floatScale2(unsigned uf) {
|
|
float f = u2f(uf);
|
|
float tf = 2*f;
|
|
if (isnan(f))
|
|
return uf;
|
|
else
|
|
return f2u(tf);
|
|
}
|
|
int test_floatFloat2Int(unsigned uf) {
|
|
float f = u2f(uf);
|
|
int x = (int) f;
|
|
return x;
|
|
}
|
|
// #include "floatPower2.c"
|