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## __smulwt

# Function __smulwt

Source

    pub unsafe fn __smulwt(a: i32, b: i32) -> i32

🔬This is a nightly-only experimental API. (`stdarch_arm_dsp` #117237)
Available on ARM and (target feature `v5te` and non-target feature `mclass`, or target features `mclass` and `dsp`) only.
Expand description

Insert a SMULWT instruction

Multiplies the 32-bit signed first operand with the high halfword (as a 16-bit signed integer) of the second operand. Return the top 32 bits of the 48-bit product