Opcode/Instruction | Op/En | 64/32-bit Mode | CPUID Feature Flag | Description |
66 0F 5E /r DIVPD xmm1, xmm2/m128 | RM | V/V | SSE2 | Divide packed double-precision floating-point values in xmm1 by packed double-precision floating-point values xmm2/m128. |
VEX.NDS.128.66.0F.WIG 5E /r VDIVPD xmm1, xmm2, xmm3/m128 | RVM | V/V | AVX | Divide packed double-precision floating-point values in xmm2 by packed double-precision floating-point values in xmm3/mem. |
VEX.NDS.256.66.0F.WIG 5E /r VDIVPD ymm1, ymm2, ymm3/m256 | RVM | V/V | AVX | Divide packed double-precision floating-point values in ymm2 by packed double-precision floating-point values in ymm3/mem. |
Op/En | Operand 1 | Operand 2 | Operand 3 | Operand 4 |
RM | ModRM:reg (r, w) | ModRM:r/m (r) | NA | NA |
RVM | ModRM:reg (w) | VEX.vvvv (r) | ModRM:r/m (r) | NA |
Performs an SIMD divide of the two or four packed double-precision floating-point values in the first source operand by the two or four packed double-precision floating-point values in the second source operand. See Chapter 11 in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1, for an overview of a SIMD doubleprecision floating-point operation.
In 64-bit mode, use of the REX.R prefix permits this instruction to access additional registers (XMM8-XMM15). 128-bit Legacy SSE version: The second source can be an XMM register or an 128-bit memory location. The destination is not distinct from the first source XMM register and the upper bits (VLMAX-1:128) of the corresponding YMM register destination are unmodified. VEX.128 encoded version: the first source operand is an XMM register or 128-bit memory location. The destination operand is an XMM register. The upper bits (VLMAX-1:128) of the corresponding YMM register destination are zeroed. VEX.256 encoded version: The first source operand is a YMM register. The second source operand can be a YMM register or a 256-bit memory location. The destination operand is a YMM register.
DIVPD (128-bit Legacy SSE version) DEST[63:0] ← SRC1[63:0] / SRC2[63:0] DEST[127:64] ← SRC1[127:64] / SRC2[127:64] DEST[VLMAX-1:128] (Unmodified) VDIVPD (VEX.128 encoded version) DEST[63:0] ← SRC1[63:0] / SRC2[63:0] DEST[127:64] ← SRC1[127:64] / SRC2[127:64] DEST[VLMAX-1:128] ← 0 VDIVPD (VEX.256 encoded version) DEST[63:0] ← SRC1[63:0] / SRC2[63:0] DEST[127:64] ← SRC1[127:64] / SRC2[127:64] DEST[191:128] ← SRC1[191:128] / SRC2[191:128] DEST[255:192] ← SRC1[255:192] / SRC2[255:192]
DIVPD: | __m128d _mm_div_pd(__m128d a, __m128d b) |
VDIVPD: | __m256d _mm256_div_pd (__m256d a, __m256d b); |
Overflow, Underflow, Invalid, Divide-by-Zero, Precision, Denormal.
See Exceptions Type 2.