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Commit 548744b4 authored by David Tschumperlé's avatar David Tschumperlé
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CImg.h
+ 61
− 35
View file @ 548744b4
......@@ -5295,15 +5295,62 @@ namespace cimg_library_suffixed {
return (float)std::fabs((double)a);
}
 
//! Return hyperbolic arcosine of a value.
inline double acosh(const double x) {
#if defined(cimg_use_cpp11) && !defined(_MSC_VER)
return std::acosh(x);
#else
return std::log(x + std::sqrt(x*x - 1));
#endif
}
//! Return hyperbolic arcsine of a value.
inline double asinh(const double x) {
#if defined(cimg_use_cpp11) && !defined(_MSC_VER)
return std::asinh(x);
#else
return std::log(x + std::sqrt(x*x + 1));
#endif
}
//! Return hyperbolic arctangent of a value.
inline double atanh(const double x) {
#if defined(cimg_use_cpp11) && !defined(_MSC_VER)
return std::atanh(x);
#else
return 0.5*std::log((1.0 + x)/(1.0 - x));
#endif
}
//! Return the sinc of a given value.
inline double sinc(const double x) {
return x?std::sin(x)/x:1;
}
//! Return base-2 logarithm of a value.
inline double log2(const double x) {
#if defined(cimg_use_cpp11) && !defined(_MSC_VER)
return std::log2(x);
#else
const double base2 = std::log(2.0);
return std::log(x)/base2;
#endif
}
//! Return square of a value.
template<typename T>
inline T sqr(const T& val) {
return val*val;
}
 
//! Return <tt>1 + log_10(x)</tt> of a value \c x.
inline int xln(const int x) {
return x>0?(int)(1 + std::log10((double)x)):1;
//! Return cubic root of a value.
template<typename T>
inline double cbrt(const T& x) {
#if cimg_use_cpp11==1
return std::cbrt(x);
#else
return x>=0?std::pow((double)x,1.0/3):-std::pow(-(double)x,1.0/3);
#endif
}
 
//! Return the minimum between three values.
......@@ -5344,11 +5391,6 @@ namespace cimg_library_suffixed {
return i;
}
 
//! Return the sinc of a given value.
inline double sinc(const double x) {
return x?std::sin(x)/x:1;
}
//! Return the modulo of a value.
/**
\param x Input value.
......@@ -5403,12 +5445,6 @@ namespace cimg_library_suffixed {
return a*b<=0?0:(a>0?(a<b?a:b):(a<b?b:a));
}
 
//! Return base-2 logarithm of a value.
inline double log2(const double x) {
const double base = std::log(2.0);
return std::log(x)/base;
}
template<typename T>
inline T round(const T& x) {
return (T)std::floor((_cimg_Tfloat)x + 0.5f);
......@@ -5425,7 +5461,7 @@ namespace cimg_library_suffixed {
inline T round(const T& x, const double y, const int rounding_type=0) {
if (y<=0) return x;
if (y==1) switch (rounding_type) {
case 0 : return round(x);
case 0 : return cimg::round(x);
case 1 : return (T)std::ceil((_cimg_Tfloat)x);
default : return (T)std::floor((_cimg_Tfloat)x);
}
......@@ -5433,16 +5469,6 @@ namespace cimg_library_suffixed {
return (T)(y*(rounding_type<0?floor:rounding_type>0?std::ceil(sx):delta<0.5?floor:std::ceil(sx)));
}
 
//! Return x^(1/3).
template<typename T>
inline double cbrt(const T& x) {
#if cimg_use_cpp11==1
return std::cbrt(x);
#else
return x>=0?std::pow((double)x,1.0/3):-std::pow(-(double)x,1.0/3);
#endif
}
// Code to compute fast median from 2,3,5,7,9,13,25 and 49 values.
// (contribution by RawTherapee: http://rawtherapee.com/).
template<typename T>
......@@ -17349,7 +17375,7 @@ namespace cimg_library_suffixed {
_cimg_mp_op("Function 'acosh()'");
arg1 = compile(ss6,se1,depth1,0,is_single);
if (_cimg_mp_is_vector(arg1)) _cimg_mp_vector1_v(mp_acosh,arg1);
if (_cimg_mp_is_constant(arg1)) _cimg_mp_constant(std::acosh(mem[arg1]));
if (_cimg_mp_is_constant(arg1)) _cimg_mp_constant(cimg::acosh(mem[arg1]));
_cimg_mp_scalar1(mp_acosh,arg1);
}
 
......@@ -17357,7 +17383,7 @@ namespace cimg_library_suffixed {
_cimg_mp_op("Function 'asinh()'");
arg1 = compile(ss6,se1,depth1,0,is_single);
if (_cimg_mp_is_vector(arg1)) _cimg_mp_vector1_v(mp_asinh,arg1);
if (_cimg_mp_is_constant(arg1)) _cimg_mp_constant(std::asinh(mem[arg1]));
if (_cimg_mp_is_constant(arg1)) _cimg_mp_constant(cimg::asinh(mem[arg1]));
_cimg_mp_scalar1(mp_asinh,arg1);
}
 
......@@ -17365,7 +17391,7 @@ namespace cimg_library_suffixed {
_cimg_mp_op("Function 'atanh()'");
arg1 = compile(ss6,se1,depth1,0,is_single);
if (_cimg_mp_is_vector(arg1)) _cimg_mp_vector1_v(mp_atanh,arg1);
if (_cimg_mp_is_constant(arg1)) _cimg_mp_constant(std::atanh(mem[arg1]));
if (_cimg_mp_is_constant(arg1)) _cimg_mp_constant(cimg::atanh(mem[arg1]));
_cimg_mp_scalar1(mp_atanh,arg1);
}
 
......@@ -20215,15 +20241,15 @@ namespace cimg_library_suffixed {
}
 
static double mp_acosh(_cimg_math_parser& mp) {
return std::acosh(_mp_arg(2));
return cimg::acosh(_mp_arg(2));
}
 
static double mp_asinh(_cimg_math_parser& mp) {
return std::asinh(_mp_arg(2));
return cimg::asinh(_mp_arg(2));
}
 
static double mp_atanh(_cimg_math_parser& mp) {
return std::atanh(_mp_arg(2));
return cimg::atanh(_mp_arg(2));
}
 
static double mp_arg(_cimg_math_parser& mp) {
......@@ -23579,7 +23605,7 @@ namespace cimg_library_suffixed {
- The \inplace of this method statically casts the computed values to the pixel type \c T.
- The \newinstance returns a \c CImg<float> image, if the pixel type \c T is \e not float-valued.
**/
_cimg_create_pointwise_functions(log2,std::log2,4096)
_cimg_create_pointwise_functions(log2,cimg::log2,4096)
 
//! Compute the base-10 logarithm of each pixel value.
/**
......@@ -23760,7 +23786,7 @@ namespace cimg_library_suffixed {
- The \inplace of this method statically casts the computed values to the pixel type \c T.
- The \newinstance returns a \c CImg<float> image, if the pixel type \c T is \e not float-valued.
**/
_cimg_create_pointwise_functions(acosh,std::acosh,8192)
_cimg_create_pointwise_functions(acosh,cimg::acosh,8192)
 
//! Compute the hyperbolic arcsine of each pixel value.
/**
......@@ -23770,7 +23796,7 @@ namespace cimg_library_suffixed {
- The \inplace of this method statically casts the computed values to the pixel type \c T.
- The \newinstance returns a \c CImg<float> image, if the pixel type \c T is \e not float-valued.
**/
_cimg_create_pointwise_functions(asinh,std::asinh,8192)
_cimg_create_pointwise_functions(asinh,cimg::asinh,8192)
 
//! Compute the hyperbolic arctangent of each pixel value.
/**
......@@ -23780,7 +23806,7 @@ namespace cimg_library_suffixed {
- The \inplace of this method statically casts the computed values to the pixel type \c T.
- The \newinstance returns a \c CImg<float> image, if the pixel type \c T is \e not float-valued.
**/
_cimg_create_pointwise_functions(atanh,std::atanh,8192)
_cimg_create_pointwise_functions(atanh,cimg::atanh,8192)
 
//! In-place pointwise multiplication.
/**
html/header.html
+ 1
− 1
View file @ 548744b4
......@@ -45,7 +45,7 @@
<a href="http://cimg.eu"><img src="http://cimg.eu/img/CImgLogo2.jpg" alt="" border="0" /></a><br/>
</center>
<center><font size="-1" color="#777777">
Latest stable version: <b><a href="http://cimg.eu/files">2.3.2</a></b>
Latest stable version: <b><a href="http://cimg.eu/files">2.3.3</a></b>
</font></center>
</td></tr>
<tr bgcolor="#FFFFFF"><td><hr noshade size="1" style="border-top: 1px solid #ccc;"/></td></tr>
......
html/header_reference.html
+ 1
− 1
View file @ 548744b4
......@@ -44,7 +44,7 @@
<a href="http://cimg.eu"><img src="http://cimg.eu/img/CImgLogo2.jpg" alt="" border="0" /></a><br/>
</center>
<center><font size="-1" color="#777777">
Latest stable version: <b><a href="http://cimg.eu/files">2.3.2</a></b>
Latest stable version: <b><a href="http://cimg.eu/files">2.3.3</a></b>
</font></center>
</td></tr>
<tr bgcolor="#FFFFFF"><td><hr noshade size="1" style="border-top: 1px solid #ccc;"/></td></tr>
......
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