225 lines
3.7 KiB
C++
225 lines
3.7 KiB
C++
// Stub definitions for float math.
|
|
|
|
// Copyright (C) 2001, 2002, 2003, 2009 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library 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 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This 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 General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
#include <cmath>
|
|
|
|
// For targets which do not have support for float versions,
|
|
// we use the following crude approximations. We keep saying that we'll do
|
|
// better later, but never do.
|
|
|
|
extern "C"
|
|
{
|
|
#ifndef _GLIBCXX_HAVE_FABSF
|
|
float
|
|
fabsf(float x)
|
|
{
|
|
return (float) fabs(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_ACOSF
|
|
float
|
|
acosf(float x)
|
|
{
|
|
return (float) acos(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_ASINF
|
|
float
|
|
asinf(float x)
|
|
{
|
|
return (float) asin(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_ATANF
|
|
float
|
|
atanf(float x)
|
|
{
|
|
return (float) atan(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_ATAN2F
|
|
float
|
|
atan2f(float x, float y)
|
|
{
|
|
return (float) atan2(x, y);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_CEILF
|
|
float
|
|
ceilf(float x)
|
|
{
|
|
return (float) ceil(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_COSF
|
|
float
|
|
cosf(float x)
|
|
{
|
|
return (float) cos(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_COSHF
|
|
float
|
|
coshf(float x)
|
|
{
|
|
return (float) cosh(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_EXPF
|
|
float
|
|
expf(float x)
|
|
{
|
|
return (float) exp(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_FLOORF
|
|
float
|
|
floorf(float x)
|
|
{
|
|
return (float) floor(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_FMODF
|
|
float
|
|
fmodf(float x, float y)
|
|
{
|
|
return (float) fmod(x, y);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_FREXPF
|
|
float
|
|
frexpf(float x, int *exp)
|
|
{
|
|
return (float) frexp(x, exp);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_SQRTF
|
|
float
|
|
sqrtf(float x)
|
|
{
|
|
return (float) sqrt(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_HYPOTF
|
|
float
|
|
hypotf(float x, float y)
|
|
{
|
|
float s = fabsf(x) + fabsf(y);
|
|
if (s == 0.0F)
|
|
return s;
|
|
x /= s; y /= s;
|
|
return s * sqrtf(x * x + y * y);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_LDEXPF
|
|
float
|
|
ldexpf(float x, int exp)
|
|
{
|
|
return (float) ldexp(x, exp);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_LOGF
|
|
float
|
|
logf(float x)
|
|
{
|
|
return (float) log(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_LOG10F
|
|
float
|
|
log10f(float x)
|
|
{
|
|
return (float) log10(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_MODFF
|
|
float
|
|
modff(float x, float *iptr)
|
|
{
|
|
double result, temp;
|
|
|
|
result = modf(x, &temp);
|
|
*iptr = (float) temp;
|
|
return (float) result;
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_POWF
|
|
float
|
|
powf(float x, float y)
|
|
{
|
|
return (float) pow(x, y);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_SINF
|
|
float
|
|
sinf(float x)
|
|
{
|
|
return (float) sin(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_SINHF
|
|
float
|
|
sinhf(float x)
|
|
{
|
|
return (float) sinh(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_TANF
|
|
float
|
|
tanf(float x)
|
|
{
|
|
return (float) tan(x);
|
|
}
|
|
#endif
|
|
|
|
#ifndef _GLIBCXX_HAVE_TANHF
|
|
float
|
|
tanhf(float x)
|
|
{
|
|
return (float) tanh(x);
|
|
}
|
|
#endif
|
|
} // extern "C"
|