o2::its::math_utils Namespace Reference

Functions
	GPUhdi () const expr float computePhi(float x
	if (o2::gpu::CAMath::Abs(area)< constants::Tolerance)
return f *	area (d1 *d2 *d3)
return *k1 *k2 *y1 y3 k2 *x1 x2 k1 *x2	x3 (k2 - k1)
	return (z1 - z2)/d

Variables
float	y
float	y1
float float	x2
float float float	y2
float float float float	x3
float float float float float	y3
const float	dx1 = x2 - x1
const float	dy1 = y2 - y1
const float	dx2 = x3 - x2
const float	dy2 = y3 - y2
const float	dx3 = x1 - x3
const float	dy3 = y1 - y3
const float	d1 = o2::gpu::CAMath::Sqrt((dx1 * dx1) + (dy1 * dy1))
const float	d2 = o2::gpu::CAMath::Sqrt((dx2 * dx2) + (dy2 * dy2))
const float	d3 = o2::gpu::CAMath::Sqrt((dx3 * dx3) + (dy3 * dy3))
const float	k1 = (y2 - y1) / dx21
const float	k2 = (y3 - y2) / dx32
float float float float	z1
float float float float float	z2
float	b
const float	phiB
const float const float	phiCut
float	w
float	v
float	p
float float	xX0
return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float	ptMin
return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float const float	rIn
return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float const float const float	rMid
return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float const float const float const float	rOut
return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float const float const float const float const float	msAngle
const float	sA = o2::gpu::CAMath::Min(0.25f * (rIn + rMid) * oneOverR, 1.f - 1.e-6f)
const float	sB = o2::gpu::CAMath::Min(0.25f * (rMid + rOut) * oneOverR, 1.f - 1.e-6f)
const float	bound = 2.f * (o2::gpu::CAMath::ASin(sB) - o2::gpu::CAMath::ASin(sA)) + 2.f * msAngle

Function Documentation

area()

return f * o2::its::math_utils::area

(

d1 *d2 *

d3

)

GPUhdi()

o2::its::math_utils::GPUhdi

(

)

const

Definition at line 38 of file MathUtils.h.

if()

o2::its::math_utils::if

(

)

Definition at line 53 of file MathUtils.h.

return()

o2::its::math_utils::return

(

z1 -

z2

)

x3()

return *k1 *k2 *y1 y3 k2 *x1 x2 k1 *x2 o2::its::math_utils::x3

(

k2 -

k1

)

Variable Documentation

b

float o2::its::math_utils::b

Initial value:

{
  return o2::gpu::CAMath::Remainderf(b - a, o2::constants::math::TwoPI)

Definition at line 92 of file MathUtils.h.

bound

const float o2::its::math_utils::bound = 2.f * (o2::gpu::CAMath::ASin(sB) - o2::gpu::CAMath::ASin(sA)) + 2.f * msAngle

Definition at line 142 of file MathUtils.h.

d1

const float o2::its::math_utils::d1 = o2::gpu::CAMath::Sqrt((dx1 * dx1) + (dy1 * dy1))

Definition at line 59 of file MathUtils.h.

d2

const float o2::its::math_utils::d2 = o2::gpu::CAMath::Sqrt((dx2 * dx2) + (dy2 * dy2))

Definition at line 60 of file MathUtils.h.

d3

const float o2::its::math_utils::d3 = o2::gpu::CAMath::Sqrt((dx3 * dx3) + (dy3 * dy3))

Definition at line 61 of file MathUtils.h.

dx1

const float o2::its::math_utils::dx1 = x2 - x1

Definition at line 56 of file MathUtils.h.

dx2

const float o2::its::math_utils::dx2 = x3 - x2

Definition at line 57 of file MathUtils.h.

dx3

const float o2::its::math_utils::dx3 = x1 - x3

Definition at line 58 of file MathUtils.h.

dy1

const float o2::its::math_utils::dy1 = y2 - y1

Definition at line 56 of file MathUtils.h.

dy2

const float o2::its::math_utils::dy2 = y3 - y2

Definition at line 57 of file MathUtils.h.

dy3

const float o2::its::math_utils::dy3 = y1 - y3

Definition at line 58 of file MathUtils.h.

k1

const float o2::its::math_utils::k1 = (y2 - y1) / dx21

Definition at line 75 of file MathUtils.h.

k2

const float o2::its::math_utils::k2 = (y3 - y2) / dx32

Definition at line 75 of file MathUtils.h.

msAngle

return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float const float const float const float const float o2::its::math_utils::msAngle

Initial value:

{
  if (ptMin <= 0.f) {
    return o2::constants::math::TwoPI;
  }
  const float oneOverR = 0.001f * 0.3f * o2::gpu::CAMath::Abs(bz) / ptMin

Definition at line 134 of file MathUtils.h.

p

float o2::its::math_utils::p

Definition at line 123 of file MathUtils.h.

phiB

const float o2::its::math_utils::phiB

Definition at line 97 of file MathUtils.h.

phiCut

return deltaPhi< phiCut||deltaPhi > o2::constants::math::TwoPI o2::its::math_utils::phiCut

Initial value:

{
  const float deltaPhi = o2::gpu::CAMath::Abs(phiA - phiB)

Definition at line 97 of file MathUtils.h.

ptMin

return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float o2::its::math_utils::ptMin

Definition at line 132 of file MathUtils.h.

rIn

return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float const float o2::its::math_utils::rIn

Definition at line 133 of file MathUtils.h.

rMid

return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float const float const float o2::its::math_utils::rMid

Definition at line 133 of file MathUtils.h.

rOut

return *o2::gpu::CAMath::Sqrt(xX0) *(1.f+0.038f *o2 const float const float const float const float o2::its::math_utils::rOut

Definition at line 133 of file MathUtils.h.

sA

const float o2::its::math_utils::sA = o2::gpu::CAMath::Min(0.25f * (rIn + rMid) * oneOverR, 1.f - 1.e-6f)

Definition at line 140 of file MathUtils.h.

sB

const float o2::its::math_utils::sB = o2::gpu::CAMath::Min(0.25f * (rMid + rOut) * oneOverR, 1.f - 1.e-6f)

Definition at line 141 of file MathUtils.h.

v

float o2::its::math_utils::v

Definition at line 113 of file MathUtils.h.

w

float float o2::its::math_utils::w

Initial value:

{
  return Sq(v) + Sq(w)

Definition at line 108 of file MathUtils.h.

x2

float float o2::its::math_utils::x2

Definition at line 49 of file MathUtils.h.

x3

float float float float o2::its::math_utils::x3

Definition at line 49 of file MathUtils.h.

xX0

float float o2::its::math_utils::xX0

Initial value:

{
  if (xX0 <= 0.f) {
    return 0.f;
  }
  float beta = p / o2::gpu::CAMath::Hypot(mass, p)

Definition at line 123 of file MathUtils.h.

y

float o2::its::math_utils::y

Initial value:

{
  return o2::math_utils::fastATan2(-y, -x) + o2::constants::math::PI

Definition at line 28 of file MathUtils.h.

y1

float o2::its::math_utils::y1

Definition at line 49 of file MathUtils.h.

y2

float float float o2::its::math_utils::y2

Definition at line 49 of file MathUtils.h.

y3

float float float float float o2::its::math_utils::y3

Initial value:

{
  
  const float area = ((x2 - x1) * (y3 - y1)) - ((x3 - x1) * (y2 - y1))

Definition at line 49 of file MathUtils.h.

z1

float float float float o2::its::math_utils::z1

Definition at line 82 of file MathUtils.h.

z2

float float float float float o2::its::math_utils::z2

Initial value:

{
  
  const float d = o2::gpu::CAMath::Hypot(x1 - x2, y1 - y2)

Definition at line 82 of file MathUtils.h.