WebAssembly numeric instructions

WebAssembly numeric instructions.

Constants

• const
  • : Declare a constant numbers.

Comparison

• eq
  • : Check if two numbers are equal.
• ne
  • : Check if two numbers are not equal.
• gt
  • : Check if a number is greater than another number.
• lt
  • : Check if a number is less than another number.
• ge
  • : Check if a number is greater than or equal to another number.
• le
  • : Check if a number is less than or equal to another number.

Arithmetic

• add
  • : Add up two numbers.
• sub
  • : Subtract one number from another number.
• mul
  • : Multiply one number by another number.
• div
  • : Divide one number by another number.
• rem
  • : Calculate the remainder left over when one integer is divided by another integer.

Conversion

• extend
  • : Convert (extend) i32 to i64.
• wrap
  • : Convert (wrap) i64 to i32.
• promote
  • : Convert (promote) f32 to f64.
• demote
  • : Convert (demote) f64 to f32.
• convert
  • : Convert integers to floating points.
• trunc (to int)
  • : Convert (truncate fractional part) floating points to integers.
• reinterpret
  • : Reinterpret the bytes of integers as floating points and vice versa.

Floating point specific instructions

• min
  • : Get the lower of two numbers.
• max
  • : Get the higher of two numbers.
• nearest
  • : Round a number to the nearest integer.
• ceil
  • : Round up a number.
• floor
  • : Round down a number.
• trunc (to float)
  • : Discard the fractional part of a number.
• abs
  • : Get the absolute value of a number.
• neg
  • : Negate a number.
• sqrt
  • : Get the square root of a number.
• copysign
  • : Copy just the sign bit from one number to another.

Bitwise

• and
  • : Used for performing a bitwise AND.
• or
  • : Used for performing a bitwise OR.
• xor
  • : Used for performing a bitwise XOR.
• shl
  • : Used for performing a bitwise left-shift.
• shr
  • : Used for performing a bitwise right-shift.
• rotl
  • : Used for performing a bitwise left-rotate.
• rotr
  • : Used for performing a bitwise right-rotate.
• clz
  • : Count the amount of leading zeros in a numbers binary representation.
• ctz
  • : Count the amount of trailing zeros in a numbers binary representation.
• popcnt
  • : Count the total amount of 1s in a numbers binary representation.