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FSIN

Computes the sine of the ST(0) value. The result is stored in ST(0).

The table below covers what the source and destinations can be.

DO NOT support LOCK

This instruction is executed in the x87 FPU environment. In x86-64 mode, it is available in both 64-bit mode and compatibility mode, as the x87 FPU state is preserved independently of the general-purpose register width.

The input value in ST(0) MUST be in radians. If the input is too large to be reduced modulo $2\pi$, the instruction SHALL signal the #O exception. Precision control is governed by the current FPU control word; if the result cannot be represented exactly, the #P exception SHALL be signaled. Any NaN input SHALL result in the #I exception.