Zephyr API Documentation 3.7.99 A Scalable Open Source RTOS
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math_extras.h File Reference
`#include <zephyr/types.h>`
`#include <stdbool.h>`
`#include <stddef.h>`
`#include <zephyr/sys/math_extras_impl.h>`

Go to the source code of this file.

## Functions

Unsigned integer addition with overflow detection.

These functions compute `a + b` and store the result in `*result`, returning true if the operation overflowed.

static bool u16_add_overflow (uint16_t a, uint16_t b, uint16_t *result)

static bool u32_add_overflow (uint32_t a, uint32_t b, uint32_t *result)

static bool u64_add_overflow (uint64_t a, uint64_t b, uint64_t *result)

static bool size_add_overflow (size_t a, size_t b, size_t *result)

Unsigned integer multiplication with overflow detection.

These functions compute `a * b` and store the result in `*result`, returning true if the operation overflowed.

static bool u16_mul_overflow (uint16_t a, uint16_t b, uint16_t *result)
Multiply two unsigned 16-bit integers.

static bool u32_mul_overflow (uint32_t a, uint32_t b, uint32_t *result)
Multiply two unsigned 32-bit integers.

static bool u64_mul_overflow (uint64_t a, uint64_t b, uint64_t *result)
Multiply two unsigned 64-bit integers.

static bool size_mul_overflow (size_t a, size_t b, size_t *result)
Multiply two size_t integers.

Count the number of leading zero bits in the bitwise representation of `x`.

When `x = 0`, this is the size of `x` in bits.

Count the number of leading zero bits in a 32-bit integer.

Count the number of leading zero bits in a 64-bit integer.

Count trailing zeros.

Count the number of trailing zero bits in the bitwise representation of `x`.

When `x = 0`, this is the size of `x` in bits.

static int u32_count_trailing_zeros (uint32_t x)
Count the number of trailing zero bits in a 32-bit integer.

static int u64_count_trailing_zeros (uint64_t x)
Count the number of trailing zero bits in a 64-bit integer.