fsub.q

Floating-Point Subtract Quad-Precision

This instruction is defined by:

Encoding

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Synopsis

The fsub.q instruction performs the quad-precision floating-point subtraction of fs2 from fs1. It computes the result as fs1 - fs2 and writes the result to the destination register fd.

Access

M HS U VS VU

Always

Always

Always

Always

Always

Decode Variables

Bits<5> fs2 = $encoding[24:20];
Bits<5> fs1 = $encoding[19:15];
Bits<3> rm = $encoding[14:12];
Bits<5> fd = $encoding[11:7];

Execution

  • Pruned, XLEN == 64

  • Original