| Opcode/Instruction | Op/En | 64/32 bit Mode Support | CPUID Feature Flag | Description |
|---|---|---|---|---|
|
0F 5C /r SUBPS xmm1 xmm2/m128 |
RM | V/V | SSE | Subtract packed single-precision floating-point values in xmm2/mem from xmm1. |
|
VEX.NDS.128.0F.WIG 5C /r VSUBPS xmm1,xmm2, xmm3/m128 |
RVM | V/V | AVX | Subtract packed single-precision floating-point values in xmm3/mem from xmm2 and stores result in xmm1. |
|
VEX.NDS.256.0F.WIG 5C /r VSUBPS ymm1, ymm2, ymm3/m256 |
RVM | V/V | AVX | Subtract packed single-precision floating-point values in ymm3/mem from ymm2 and stores result in ymm1. |
| 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 a SIMD subtract of the four packed single-precision floating-point values in the source operand (second operand) from the four packed single-precision floating-point values in the destination operand (first operand), and stores the packed single-precision floating-point results in the destination operand. The source operand can be an XMM register or a 128-bit memory location. The destination operand is an XMM register. See Figure 10-5 in the Intel® 64 and IA-32 Architectures Software Developer’s Manual, Volume 1, for an illustration of a SIMD double-precision floating-point operation.
In 64-bit mode, using a REX prefix in the form of REX.R 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 desti-nation 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.
SUBPS (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)
VSUBPS (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
VSUBPS (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].
SUBPS:
__m128 _mm_sub_ps(__m128 a, __m128 b)
VSUBPS:
__m256 _mm256_sub_ps (__m256 a, __m256 b);
Overflow, Underflow, Invalid, Precision, Denormal.
See Exceptions Type 2.