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

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AMD64 Technology 26568—Rev. 3.05—September 2003 CVTDQ2PS Convert Packed Doubleword Integers to Packed Single-Precision Floating-Point Converts four packed 32-bit signed integer values in an XMM register or a 128-bit memory location to four packed single-precision floating-point values and writes the converted values in another XMM register. If the result of the conversion is an inexact value, the value is rounded as specified by the rounding control bits (RC) in the MXCSR register. Mnemonic Opcode Description CVTDQ2PS xmm1, xmm2/mem128 0F 5B /r Converts packed doubleword integer values in an XMM register or 128-bit memory location to packed single-precision floating-point values in the destination XMM register. Related Instructions CVTPI2PS, CVTPS2DQ, CVTPS2PI, CVTSI2SS, CVTSS2SI, CVTTPS2DQ, CVTTPS2PI, CVTTSS2SI rFLAGS Affected None xmm1 xmm2/mem128 127 96 95 64 63 32 31 0 44 CVTDQ2PS 127 96 95 64 63 32 31 0 convert convert convert convert cvtdq2ps.eps
26568—Rev. 3.05—September 2003 AMD64 Technology MXCSR Flags Affected FZ RC PM UM OM ZM DM IM DAZ PE UE OE ZE DE IE 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Note: A flag that may be set to one or cleared to zero is M (modified). Unaffected flags are blank. Exceptions Exception Real Invalid opcode, #UD X X X Virtual 8086 Protected Cause of Exception X X X X X X M 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 X A memory address exceeded a data segment limit or was non-canonical. A null data segment was used to reference memory. X X X The memory operand was not aligned on a 16-byte boundary. Page fault, #PF X X A page fault resulted from the execution of the instruction. SIMD Floating-Point Exception, #XF X X X There was an unmasked SIMD floating-point exception while CR4.OSXMMEXCPT = 1. See SIMD Floating-Point Exceptions, below, for details. SIMD Floating-Point Exceptions Precision exception (PE) X X X A result coulld not be represented exactly in the destination format. CVTDQ2PS 45
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