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math_extras.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2019 Facebook.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_SYS_MATH_EXTRAS_H_
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#define ZEPHYR_INCLUDE_SYS_MATH_EXTRAS_H_
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#include <
zephyr/types.h
>
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#include <
stdbool.h
>
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#include <stddef.h>
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static
bool
u16_add_overflow
(
uint16_t
a,
uint16_t
b,
uint16_t
*result);
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static
bool
u32_add_overflow
(
uint32_t
a,
uint32_t
b,
uint32_t
*result);
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static
bool
u64_add_overflow
(
uint64_t
a,
uint64_t
b,
uint64_t
*result);
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static
bool
size_add_overflow
(
size_t
a,
size_t
b,
size_t
*result);
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88
static
bool
u16_mul_overflow
(
uint16_t
a,
uint16_t
b,
uint16_t
*result);
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static
bool
u32_mul_overflow
(
uint32_t
a,
uint32_t
b,
uint32_t
*result);
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static
bool
u64_mul_overflow
(
uint64_t
a,
uint64_t
b,
uint64_t
*result);
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static
bool
size_mul_overflow
(
size_t
a,
size_t
b,
size_t
*result);
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static
int
u32_count_leading_zeros
(
uint32_t
x);
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static
int
u64_count_leading_zeros
(
uint64_t
x);
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static
int
u32_count_trailing_zeros
(
uint32_t
x);
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static
int
u64_count_trailing_zeros
(
uint64_t
x);
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#include <
zephyr/sys/math_extras_impl.h
>
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#endif
/* ZEPHYR_INCLUDE_SYS_MATH_EXTRAS_H_ */
u16_mul_overflow
static bool u16_mul_overflow(uint16_t a, uint16_t b, uint16_t *result)
Multiply two unsigned 16-bit integers.
u64_count_trailing_zeros
static int u64_count_trailing_zeros(uint64_t x)
Count the number of trailing zero bits in a 64-bit integer.
u64_mul_overflow
static bool u64_mul_overflow(uint64_t a, uint64_t b, uint64_t *result)
Multiply two unsigned 64-bit integers.
u32_add_overflow
static bool u32_add_overflow(uint32_t a, uint32_t b, uint32_t *result)
Add two unsigned 32-bit integers.
u32_mul_overflow
static bool u32_mul_overflow(uint32_t a, uint32_t b, uint32_t *result)
Multiply two unsigned 32-bit integers.
u32_count_trailing_zeros
static int u32_count_trailing_zeros(uint32_t x)
Count the number of trailing zero bits in a 32-bit integer.
u16_add_overflow
static bool u16_add_overflow(uint16_t a, uint16_t b, uint16_t *result)
Add two unsigned 16-bit integers.
size_mul_overflow
static bool size_mul_overflow(size_t a, size_t b, size_t *result)
Multiply two size_t integers.
size_add_overflow
static bool size_add_overflow(size_t a, size_t b, size_t *result)
Add two size_t integers.
u32_count_leading_zeros
static int u32_count_leading_zeros(uint32_t x)
Count the number of leading zero bits in a 32-bit integer.
u64_count_leading_zeros
static int u64_count_leading_zeros(uint64_t x)
Count the number of leading zero bits in a 64-bit integer.
u64_add_overflow
static bool u64_add_overflow(uint64_t a, uint64_t b, uint64_t *result)
Add two unsigned 64-bit integers.
types.h
math_extras_impl.h
Inline implementation of functions declared in math_extras.h.
stdbool.h
uint32_t
__UINT32_TYPE__ uint32_t
Definition
stdint.h:90
uint64_t
__UINT64_TYPE__ uint64_t
Definition
stdint.h:91
uint16_t
__UINT16_TYPE__ uint16_t
Definition
stdint.h:89
zephyr
sys
math_extras.h
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