vfpclasspd

Floating-Point Class Double

VFPCLASSPD k1 {k2}, zmm2/m512, imm8

Tests for category (NaN, Inf, Denormal) for doubles.

Details

The Floating-Point Class Double instruction tests for category (NaN, Inf, Denormal) for doubles.

Pseudocode Operation

// Tests for category (NaN, Inf, Denormal) for doubles

Example

VFPCLASSPD k1, zmm2/m512, 3

Encoding

Binary Layout
EVEX
+0
66
+4
0F
+5
3A
+6
67
+7
 
Format EVEX
Opcode 66 0F 3A 67
Extension AVX-512DQ

Operands

  • dest
    AVX-512 opmask register (k0-k7)
  • src1
    512-bit ZMM AVX-512 register or Memory operand
  • src2
    8-bit signed immediate