Square root of function.
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#include <JMathlib.hh>
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| JSqrt () |
| Default constructor.
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| JSqrt (const JF1_t &f1) |
| Constructor.
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double | getValue (const double x) const |
| Function value.
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double | getDerivative (const double x) const |
| Derivative value.
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const JSqrt & | getGradient (const double x) const |
| Get gradient.
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double | operator() (const Args &...args) const |
| Function value.
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template<class JF1_t = _vF>
struct JMATH::JSqrt< JF1_t >
Square root of function.
Definition at line 2055 of file JMathlib.hh.
◆ JSqrt() [1/2]
template<class JF1_t = _vF>
Default constructor.
Definition at line 2065 of file JMathlib.hh.
2065 :
2066 JF1_t()
2067 {}
◆ JSqrt() [2/2]
template<class JF1_t = _vF>
Constructor.
- Parameters
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Definition at line 2075 of file JMathlib.hh.
2075 :
2076 JF1_t(f1)
2077 {}
◆ getValue()
template<class JF1_t = _vF>
double JMATH::JSqrt< JF1_t >::getValue |
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const double | x | ) |
const |
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inline |
Function value.
- Parameters
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- Returns
- function value
Definition at line 2086 of file JMathlib.hh.
2087 {
2088 const double u = static_cast<const JF1_t&>(*this).getValue(x);
2089
2090 return sqrt(u);
2091 }
◆ getDerivative()
template<class JF1_t = _vF>
double JMATH::JSqrt< JF1_t >::getDerivative |
( |
const double | x | ) |
const |
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inline |
Derivative value.
- Parameters
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- Returns
- derivative value
Definition at line 2100 of file JMathlib.hh.
2101 {
2102 const double u = static_cast<const JF1_t&>(*this).getValue(x);
2103 const double v = static_cast<const JF1_t&>(*this).getDerivative(x);
2104
2105 return 0.5 * v / sqrt(u);
2106 }
◆ getGradient()
template<class JF1_t = _vF>
Get gradient.
- Parameters
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- Returns
- gradient
Definition at line 2115 of file JMathlib.hh.
2116 {
2117 static JSqrt gradient;
2118
2119 const double u = static_cast<const JF1_t&>(*this).getValue(x);
2120
2121 static_cast<JF1_t&>(gradient) = static_cast<const JF1_t&>(*this).getGradient(x);
2122 static_cast<JF1_t&>(gradient) *= 0.5 / sqrt(u);
2123
2124 return gradient;
2125 }
JSqrt()
Default constructor.
◆ operator()()
Function value.
- Parameters
-
- Returns
- function value
Definition at line 362 of file JMathlib.hh.
363 {
364 return static_cast<const JF1_t&
>(*this).getValue(
args...);
365 }
The documentation for this struct was generated from the following file: