Opcode/Instruction | Op/En | 64/32-bit Mode | CPUID Feature Flag | Description |
0F 5E /r DIVPS xmm1, xmm2/m128 | RM | V/V | SSE | Divide packed single-precision floating-point values in xmm1 by packed single-precision floating-point values xmm2/m128. |
VEX.NDS.128.0F.WIG 5E /r VDIVPS xmm1, xmm2, xmm3/m128 | RVM | V/V | AVX | Divide packed single-precision floating-point values in xmm2 by packed double-precision floating-point values in xmm3/mem. |
VEX.NDS.256.0F.WIG 5E /r VDIVPS ymm1, ymm2, ymm3/m256 | RVM | V/V | AVX | Divide packed single-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 four or eight packed single-precision floating-point values in the first source operand by the four or eight packed single-precision floating-point values in the second source operand. See Chapter 10 in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1, for an overview of a SIMD single-precision 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.
DIVPS (128-bit Legacy SSE version) DEST[31:0] ← SRC1[31:0] / SRC2[31:0] DEST[63:32] ← SRC1[63:32] / SRC2[63:32] DEST[95:64] ← SRC1[95:64] / SRC2[95:64] DEST[127:96] ← SRC1[127:96] / SRC2[127:96] DEST[VLMAX-1:128] (Unmodified) VDIVPS (VEX.128 encoded version) DEST[31:0] ← SRC1[31:0] / SRC2[31:0] DEST[63:32] ← SRC1[63:32] / SRC2[63:32] DEST[95:64] ← SRC1[95:64] / SRC2[95:64] DEST[127:96] ← SRC1[127:96] / SRC2[127:96] DEST[VLMAX-1:128] ← 0 VDIVPS (VEX.256 encoded version) DEST[31:0] ← SRC1[31:0] / SRC2[31:0] DEST[63:32] ← SRC1[63:32] / SRC2[63:32] DEST[95:64] ← SRC1[95:64] / SRC2[95:64] DEST[127:96] ← SRC1[127:96] / SRC2[127:96] DEST[159:128] ← SRC1[159:128] / SRC2[159:128] DEST[191:160]← SRC1[191:160] / SRC2[191:160] DEST[223:192] ← SRC1[223:192] / SRC2[223:192] DEST[255:224] ← SRC1[255:224] / SRC2[255:224].
DIVPS: | __m128 _mm_div_ps(__m128 a, __m128 b) |
VDIVPS: | __m256 _mm256_div_ps (__m256 a, __m256 b); |
Overflow, Underflow, Invalid, Divide-by-Zero, Precision, Denormal.
See Exceptions Type 2.