?? e_asin.s
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}{ .mfi nop.m 0 fma.s1 fB7 = fB7, fR, fB6 nop.i 0};;{ .mfi nop.m 0 fma.s1 fB3 = fB3, fR, fB2 nop.i 0};;{ .mfi nop.m 0 fnma.s1 fD = fH, fS, fHalf // d0 = 1/2 - H0*S0 nop.i 0};;{ .mfi nop.m 0 fma.s1 fR8 = fRQuadr, fRQuadr, f0 // R^4 nop.i 0}{ .mfi nop.m 0 fma.s1 fB9 = fB9, fR, fB8 nop.i 0};;{.mfi nop.m 0 fma.s1 fB12 = fB12, fRSqr, fB11 nop.i 0}{.mfi nop.m 0 fma.s1 fB7 = fB7, fRSqr, fB5 nop.i 0};;{.mfi nop.m 0 fma.s1 fB3 = fB3, fRSqr, fB1 nop.i 0};;{ .mfi nop.m 0 fma.s1 fH = fH, fD, fH // H1 = H0 + H0*d0 nop.i 0}{ .mfi nop.m 0 fma.s1 fS = fS, fD, fS // S1 = S0 + S0*d0 nop.i 0};;{.mfi nop.m 0 fma.s1 fPiBy2 = fPiBy2, fSignX, f0 // signum(x)*Pi/2 nop.i 0};;{ .mfi nop.m 0 fma.s1 fB12 = fB12, fRSqr, fB9 nop.i 0}{ .mfi nop.m 0 fma.s1 fB7 = fB7, fRQuadr, fB3 nop.i 0};;{.mfi nop.m 0 fnma.s1 fD = fH, fS, fHalf // d1 = 1/2 - H1*S1 nop.i 0}{ .mfi nop.m 0 fnma.s1 fSignedS = fSignX, fS, f0 // -signum(x)*S1 nop.i 0};;{ .mfi nop.m 0 fma.s1 fCloseTo1Pol = fB12, fR8, fB7 nop.i 0};;{ .mfi nop.m 0 fma.s1 fH = fH, fD, fH // H2 = H1 + H1*d1 nop.i 0}{ .mfi nop.m 0 fma.s1 fS = fS, fD, fS // S2 = S1 + S1*d1 nop.i 0};;{ .mfi nop.m 0 // -signum(x)* S2 = -signum(x)*(S1 + S1*d1) fma.s1 fSignedS = fSignedS, fD, fSignedS nop.i 0};;{.mfi nop.m 0 fnma.s1 fD = fH, fS, fHalf // d2 = 1/2 - H2*S2 nop.i 0};;{ .mfi nop.m 0 // signum(x)*(Pi/2 - PolB*S2) fma.s1 fPiBy2 = fSignedS, fCloseTo1Pol, fPiBy2 nop.i 0}{ .mfi nop.m 0 // -signum(x)*PolB * S2 fma.s1 fCloseTo1Pol = fSignedS, fCloseTo1Pol, f0 nop.i 0};;{ .mfb nop.m 0 // final result for 0.625 <= |x| < 1 fma.d.s0 f8 = fCloseTo1Pol, fD, fPiBy2 // exit here for 0.625 <= |x| < 1 br.ret.sptk b0};;// here if |x| < 0.625.align 32asin_base_range:{ .mfi nop.m 0 fma.s1 fA33 = fA33, fXSqr, fA31 nop.i 0}{ .mfi nop.m 0 fma.s1 fA15 = fA15, fXSqr, fA13 nop.i 0};;{ .mfi nop.m 0 fma.s1 fA29 = fA29, fXSqr, fA27 nop.i 0}{ .mfi nop.m 0 fma.s1 fA25 = fA25, fXSqr, fA23 nop.i 0};;{ .mfi nop.m 0 fma.s1 fA21 = fA21, fXSqr, fA19 nop.i 0}{ .mfi nop.m 0 fma.s1 fA9 = fA9, fXSqr, fA7 nop.i 0};;{ .mfi nop.m 0 fma.s1 fA5 = fA5, fXSqr, fA3 nop.i 0};;{ .mfi nop.m 0 fma.s1 fA35 = fA35, fXQuadr, fA33 nop.i 0}{ .mfi nop.m 0 fma.s1 fA17 = fA17, fXQuadr, fA15 nop.i 0};;{ .mfi nop.m 0 fma.s1 fX8 = fXQuadr, fXQuadr, f0 // x^8 nop.i 0}{ .mfi nop.m 0 fma.s1 fA25 = fA25, fXQuadr, fA21 nop.i 0};;{ .mfi nop.m 0 fma.s1 fA9 = fA9, fXQuadr, fA5 nop.i 0};;{ .mfi nop.m 0 fma.s1 fA35 = fA35, fXQuadr, fA29 nop.i 0}{ .mfi nop.m 0 fma.s1 fA17 = fA17, fXSqr, fA11 nop.i 0};;{ .mfi nop.m 0 fma.s1 fX16 = fX8, fX8, f0 // x^16 nop.i 0};;{ .mfi nop.m 0 fma.s1 fA35 = fA35, fX8, fA25 nop.i 0}{ .mfi nop.m 0 fma.s1 fA17 = fA17, fX8, fA9 nop.i 0};;{ .mfi nop.m 0 fma.s1 fBaseP = fA35, fX16, fA17 nop.i 0};;{ .mfb nop.m 0 // final result for |x| < 0.625 fma.d.s0 f8 = fBaseP, fXCube, f8 // exit here for |x| < 0.625 path br.ret.sptk b0};;// here if |x| = 1// asin(x) = sign(x) * Pi/2.align 32asin_abs_1:{ .mfi ldfe fPiBy2 = [rPiBy2Ptr] // Pi/2 nop.f 0 nop.i 0};;{.mfb nop.m 0 // result for |x| = 1.0 fma.d.s0 f8 = fPiBy2, fSignX, f0 // exit here for |x| = 1.0 br.ret.sptk b0};;// here if x is a NaN, denormal, or zero.align 32asin_special:{ .mfi nop.m 0 // set p12 = 1 if x is a NaN fclass.m p12, p0 = f8, 0xc3 nop.i 0}{ .mlx nop.m 0 // smallest positive DP normalized number movl rDenoBound = 0x0010000000000000};;{ .mfi nop.m 0 // set p13 = 1 if x = 0.0 fclass.m p13, p0 = f8, 0x07 nop.i 0}{ .mfi nop.m 0 fnorm.s1 fNormX = f8 nop.i 0};;{ .mfb // load smallest normal to FP reg setf.d fDenoBound = rDenoBound // answer if x is a NaN(p12) fma.d.s0 f8 = f8,f1,f0 // exit here if x is a NaN(p12) br.ret.spnt b0};;{ .mfb nop.m 0 nop.f 0 // exit here if x = 0.0(p13) br.ret.spnt b0};;// if we still here then x is denormal or unnormal{ .mfi nop.m 0 // absolute value of normalized x fmerge.s fNormX = f1, fNormX nop.i 0};;{ .mfi nop.m 0 // set p14 = 1 if normalized x is greater than or // equal to the smallest denormalized value // So, if p14 is set to 1 it means that we deal with // unnormal rather than with "true" denormal fcmp.ge.s1 p14, p0 = fNormX, fDenoBound nop.i 0};;{ .mfi nop.m 0(p14) fcmp.eq.s0 p6, p0 = f8, f0 // Set D flag if x unnormal nop.i 0}{ .mfb nop.m 0 // normalize unnormal input(p14) fnorm.s1 f8 = f8 // return to the main path(p14) br.cond.sptk asin_unnormal_back};;// if we still here it means that input is "true" denormal{ .mfb nop.m 0 // final result if x is denormal fma.d.s0 f8 = f8, fXSqr, f8 // exit here if x is denormal br.ret.sptk b0};;// here if |x| > 1.0// error handler should be called.align 32asin_abs_gt_1:{ .mfi alloc r32 = ar.pfs, 0, 3, 4, 0 // get some registers fmerge.s FR_X = f8,f8 nop.i 0}{ .mfb mov GR_Parameter_TAG = 61 // error code frcpa.s0 FR_RESULT, p0 = f0,f0 // call error handler routine br.cond.sptk __libm_error_region};;GLOBAL_LIBM_END(asin)LOCAL_LIBM_ENTRY(__libm_error_region).prologue{ .mfi add GR_Parameter_Y=-32,sp // Parameter 2 value nop.f 0.save ar.pfs,GR_SAVE_PFS mov GR_SAVE_PFS=ar.pfs // Save ar.pfs}{ .mfi.fframe 64 add sp=-64,sp // Create new stack nop.f 0 mov GR_SAVE_GP=gp // Save gp};;{ .mmi stfd [GR_Parameter_Y] = FR_Y,16 // STORE Parameter 2 on stack add GR_Parameter_X = 16,sp // Parameter 1 address.save b0, GR_SAVE_B0 mov GR_SAVE_B0=b0 // Save b0};;.body{ .mib stfd [GR_Parameter_X] = FR_X // STORE Parameter 1 on stack add GR_Parameter_RESULT = 0,GR_Parameter_Y // Parameter 3 address nop.b 0}{ .mib stfd [GR_Parameter_Y] = FR_RESULT // STORE Parameter 3 on stack add GR_Parameter_Y = -16,GR_Parameter_Y br.call.sptk b0=__libm_error_support# // Call error handling function};;{ .mmi add GR_Parameter_RESULT = 48,sp nop.m 0 nop.i 0};;{ .mmi ldfd f8 = [GR_Parameter_RESULT] // Get return result off stack.restore sp add sp = 64,sp // Restore stack pointer mov b0 = GR_SAVE_B0 // Restore return address};;{ .mib mov gp = GR_SAVE_GP // Restore gp mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs br.ret.sptk b0 // Return};;LOCAL_LIBM_END(__libm_error_region).type __libm_error_support#,@function.global __libm_error_support#?? 快捷鍵說明
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