AMD x86-64 Architecture Programmer's Manual, Volume 4, 128-Bit ...

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AMD64 Technology 26568—Rev. 3.05—September 2003 Exceptions. Exception Real Invalid opcode, #UD X X X 364 SQRTSD Virtual 8086 Protected Cause of Exception X X X X X X The SSE2 instructions are not supported, as indicated by bit 26 of CPUID standard function 1. The emulate bit (EM) of CR0 was set to 1. The operating-system FXSAVE/FXRSTOR support bit (OSFXSR) of CR4 was cleared to 0. X X X There was an unmasked SIMD floating-point exception while CR4.OSXMMEXCPT = 0. See SIMD Floating-Point Exceptions, below, for details. Device not available, #NM X X X The task-switch bit (TS) of CR0 was set to 1. Stack, #SS X X X A memory address exceeded the stack segment limit or was non-canonical. General protection, #GP X X X A memory address exceeded a data segment limit or was non-canonical. X A null data segment was used to reference memory. Page fault, #PF X X A page fault resulted from the execution of the instruction. Alignment check, #AC X X An unaligned memory reference was performed while alignment checking was enabled. SIMD Floating-Point X X X There was an unmasked SIMD floating-point exception Exception, #XF while CR4.OSXMMEXCPT = 1. See SIMD Floating-Point Exceptions, below, for details. SIMD Floating-Point Exceptions Invalid-operation exception (IE) X X X A source operand was an SNaN value. X X X A source operand was negative (not including –0). Denormalized-operand exception (DE) X X X A source operand was a denormal value. Precision exception (PE) X X X A result could not be represented exactly in the destination format.
26568—Rev. 3.05—September 2003 AMD64 Technology SQRTSS Square Root Scalar Single-Precision Floating-Point Computes the square root of the low-order single-precision floating-point value in an XMM register or 32-bit memory location and writes the result in the low-order doubleword of another XMM register. The three high-order doublewords of the destination XMM register are not modified. Taking the square root of +infinity returns +infinity. Mnemonic Opcode Description SQRTSS xmm1, xmm2/mem32 F3 0F 51 /r Computes square root of single-precision floating-point value in an XMM register or 32-bit memory location and writes the result in the destination XMM register. Related Instructions RSQRTPS, RSQRTSS, SQRTPD, SQRTPS, SQRTSD rFLAGS Affected None xmm1 xmm2/mem32 127 32 31 0 127 32 31 0 square root sqrtss.eps SQRTSS 365
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AMD x86-64 Architecture Programmer's Manual, Volume 4, 128-Bit ...

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