OpenVDB: nanovdb/util/Util.h File Reference

OpenVDB 12.1.1

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Util.h File Reference

Utility functions. More...

`#include <stdlib.h>`
`#include <stdint.h>`
`#include <stddef.h>`
`#include <cassert>`
`#include <cstdio>`
`#include <cmath>`
`#include <limits>`
`#include <utility>`

Go to the source code of this file.

## Classes
struct | is_same< T0, T1, T >
| C++11 implementation of std::is_same. More...
struct | is_same< T0, T1 >
struct | is_same< T, T >
struct | is_floating_point< T >
| C++11 implementation of std::is_floating_point. More...
struct | enable_if< bool, T >
| C++11 implementation of std::enable_if. More...
struct | enable_if< true, T >
struct | disable_if< bool, T >
struct | disable_if< true, T >
struct | is_const< T >
struct | is_const< const T >
struct | is_pointer< T >
| Trait used to identify template parameter that are pointers. More...
struct | is_pointer< T * >
| Template specialization of pointers. More...
struct | conditional< bool, TrueT, FalseT >
| C++11 implementation of std::conditional. More...
struct | conditional< false, TrueT, FalseT >
| Template specialization of conditional. More...
struct | remove_const< T >
| Trait use to const from type. Default implementation is just a pass-through. More...
struct | remove_const< const T >
| Template specialization of trait class use to remove const qualifier type from a type. More...
struct | remove_reference< T >
| Trait use to remove reference, i.e. "&", qualifier from a type. Default implementation is just a pass-through. More...
struct | remove_reference< T & >
| Template specialization of trait class use to remove reference, i.e. "&", qualifier from a type. More...
struct | remove_pointer< T >
| Trait use to remove pointer, i.e. "*", qualifier from a type. Default implementation is just a pass-through. More...
struct | remove_pointer< T * >
| Template specialization of trait class use to to remove pointer, i.e. "*", qualifier from a type. More...
struct | match_const< T, ReferenceT >
| Trait used to transfer the const-ness of a reference type to another type. More...
struct | match_const< T, const ReferenceT >
| Template specialization used to transfer the const-ness of a reference type to another type. More...
struct | is_specialization< AnyType, TemplateType >
| Metafunction used to determine if the first template parameter is a specialization of the class template given in the second template parameter. More...
struct | is_specialization< TemplateType< Args... >, TemplateType >

## Namespaces
namespace | nanovdb
namespace | nanovdb::util
namespace | nanovdb::util::impl

## Macros
#define | NANOVDB_ASSERT(x)
#define | __hostdev__
#define | __global__
#define | __device__
#define | __host__
#define | NANOVDB_HOSTDEV_DISABLE_WARNING
#define | NANOVDB_OFFSETOF(CLASS, MEMBER)
| Defines macros that issues warnings for deprecated header files.

## Functions
template<typename T>
T && | declval () noexcept
| Minimal implementation of std::declval, which converts any type `T` to.
bool | empty (const char *str)
| tests if a c-string `str` is empty, that is its first value is '\0'
size_t | strlen (const char *str)
| length of a c-sting, excluding '\0'.
char * | strcpy (char *dst, const char *src)
| Copy characters from `src` to `dst`.
char * | strncpy (char *dst, const char *src, size_t max)
| Copies the first num characters of `src` to `dst`. If the end of the source C string (which is signaled by a null-character) is found before `max` characters have been copied, `dst` is padded with zeros until a total of `max` characters have been written to it.
char * | strcpy (char *dst, int num, int bas=10)
| converts a number to a string using a specific base
char * | strcat (char *dst, const char *src)
| Appends a copy of the character string pointed to by `src` to the end of the character string pointed to by `dst` on the device.
char * | strcat (char *dst, int num, int bas=10)
| concatenates a number after a string using a specific base
int | strcmp (const char *lhs, const char *rhs)
| Compares two null-terminated byte strings lexicographically.
bool | streq (const char *lhs, const char *rhs)
| Test if two null-terminated byte strings are the same.
char * | sprint (char *dst)
template<typename T, typename... Types>
char * | sprint (char *dst, T var1, Types... var2)
template<typename T, typename... Types>
char * | sprint (char *dst, T var1, Types... var2)
| prints a variable number of string and/or numbers to a destination string
static void * | memzero (void *dst, size_t byteCount)
| Zero initialization of memory.
static int64_t | PtrDiff (const void *p, const void *q)
| Compute the distance, in bytes, between two pointers, dist = p - q.
template<typename DstT = void>
static DstT * | PtrAdd (void *p, int64_t offset)
| Adds a byte offset to a non-const pointer to produce another non-const pointer.
template<typename DstT = void>
static const DstT * | PtrAdd (const void *p, int64_t offset)
| Adds a byte offset to a const pointer to produce another const pointer.
uint32_t | findLowestOn (uint32_t v)
| Returns the index of the lowest, i.e. least significant, on bit in the specified 32 bit word.
uint32_t | findLowestOn (uint64_t v)
| Returns the index of the lowest, i.e. least significant, on bit in the specified 64 bit word.
uint32_t | findHighestOn (uint32_t v)
| Returns the index of the highest, i.e. most significant, on bit in the specified 32 bit word.
uint32_t | findHighestOn (uint64_t v)
| Returns the index of the highest, i.e. most significant, on bit in the specified 64 bit word.
uint32_t | countOn (uint64_t v)
uint32_t | FindLowestOn (uint32_t v)
uint32_t | FindLowestOn (uint64_t v)
uint32_t | FindHighestOn (uint32_t v)
uint32_t | FindHighestOn (uint64_t v)
uint32_t | CountOn (uint64_t v)

## Detailed Description

Utility functions.

Author
  Ken Museth

Date
  January 8, 2020

## Macro Definition Documentation

## ◆ __device__

#define __device__

## ◆ __global__

#define __global__

## ◆ __host__

#define __host__

## ◆ __hostdev__

#define __hostdev__

## ◆ NANOVDB_ASSERT

#define NANOVDB_ASSERT | ( |  | x | ) |

Value:
assert(x)

## ◆ NANOVDB_HOSTDEV_DISABLE_WARNING

#define NANOVDB_HOSTDEV_DISABLE_WARNING

## ◆ NANOVDB_OFFSETOF

#define NANOVDB_OFFSETOF | ( |  | CLASS,
|  |  | MEMBER )

Value:
((int)(size_t)((char*)&((CLASS*)0)->MEMBER - (char*)0))

Defines macros that issues warnings for deprecated header files.

Example:

#include <nanovdb/util/Util.h> // for NANOVDB_DEPRECATED_HEADER
#include <nanovdb/path/Alternative.h>
NANOVDB_DEPRECATED_HEADER("This header file is deprecated, please use <nanovdb/path/Alternative.h> instead")
Util.h
Utility functions.