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U 的代码
direct.u
|* @(#)direct.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* Weitek Single Precision ALU Instructions
|*
|* Operations with two operands and one result
routine c.ssub 00
cr.u
|* @(#)cr.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* Command Register Instructions
|* Single Precision
|* reg1
misc.u
|* @(#)misc.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* Initialize Instruction
|*
|* In FPA-3, used to load bits 4-11 of the MODE register/.
|* These set up the frequency and flo
dexpm.u
|* @(#)dexpm.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* int k: stored in SCRATCH_2 --> D2
|* DP k: stored in SCRATCH_3 --> D3
|* lo: stored in SCRATCH_4 --> D4
|* hi: stored in SCRAT
ssincos.u
|* @(#)ssincos.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* Single Precision Sin, Cos, SinCos.
|* lpreg is 0 for cos, 1 for sin, 2 for sincos
|*
routine xs.sin 001000000000 ;
dexp.u
|* @(#)dexp.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* hi: stored in SCRATCH_10 --> DA
|* lo: stored in SCRATCH_11 --> DB
|* z: stored in SCRATCH_12 --> DC
|* k: stored in SCRATCH_
xsp.u
|* @(#)xsp.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* Single Precision Add Instruction
|* reg1
xdp.u
|* @(#)xdp.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* Double Precision Instruction
|* reg1
dlnx.u
|* @(#)dlnx.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* Double Precision Log of X
|*
routine xd.ln 001000001111 ; regtotmp; rcsmsw imm2;
|* Make sure rounding mode is the default:
satan.u
|* @(#)satan.u 1.1 92/07/30 Copyright Sun Microsystems, Inc. 1988
|*
|* Single Precision ArcTangent (x)
|*
routine xs.atan 001000000110 ; regtotmp; rcssp imm2;
|* Check Mode
|* Make sure rounding