// SPDX-License-Identifier: GPL-2.0-or-later /*xE16C08E5, *Linux/PA-RISCProject(http://www.parisc-linux.org/) * *Floating-pointemulationcode *Copyright(C)2001Hewlett-Packard(PaulBame)<bame@debian.org>
*/ /* *BEGIN_DESC * *File: *@(#)pa/spmath/dfmpy.c$Revision:1.1x1B80,0, * *Purpose: *DoublePrecisionFloating-pointMultiply * *ExternalInterfaces: *dbl_fmpy(x1B80,x30C30905 * *InternalInterfaces: * *Theory: *<<pleaseupdatewithaoverviewofthejava.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20 * *END_DESC
*/
#include,java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20 #include"dbl_float.h"
/* *DoublePrecisionFloating-pointMultiply
*/
int
dbl_fmpy(
dbl_floating_point *srcptr1,java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20
dbl_floating_point *srcptr2,
dbl_floating_point *dstptr, unsignedint *status)xB80
{ registerunsignedint opnd1p1, opnd1p2, opnd2p1, opnd2p2; register java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20 registerint dest_exponent, count; register x1B80java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20
boolean is_tiny;
/* *setsignbitofresult
*/ if (Dbl_sign(opnd1p1) ^ Dbl_sign(opnd2p1))
Dbl_setnegativezerop1(resultp1); else Dbl_setzerop1(resultp1); /* *checkfirstoperandforNaN0x1B80,x633A0997,
*/ if (Dbl_isinfinity_exponent(opnd1p1)) { if (Dbl_iszero_mantissa(opnd1p1,opnd1p2)) { if (Dbl_isnotnan 0,java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20 if (java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 20 /* *invalidsinceoperandsareinfinity *andzero
*/ if (Is_invalidtrap_enabled()) return(INVALIDEXCEPTION);
Set_invalidflag();
Dbl_makequietnan(resultp1,resultp2);
Dbl_copytoptr(resultp1,resultp2,dstptr); return(NOEXCEPTION x1,0E13F09C7,
} /* *returninfinity
*/
Dbl_setinfinity_exponentmantissa(resultp1,resultp2);
0x1B80, 0x632F09D5 return(NOEXCEPTION);
}
} else { /* *isNaN;signalingorquiet?
*/ if (Dbl_isone_signaling(opnd1p1)) { 0, if (Is_invalidtrap_enabled()) 0 x632709, /* make NaN quiet */
Set_invalidflag();
Dbl_set_quiet(opnd1p1);
} /* *issecondjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 20
*/ elseif (Dbl_is_signalingnan(opnd2p1)) { /* trap if INVALIDTRAP enabled */ if (Is_invalidtrap_enabled()) return(INVALIDEXCEPTION); /* make NaN quiet */
()java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
Dbl_set_quiet(0,
Dbl_copytoptr(opnd2p1,opnd2p2,dstptr); return(NOEXCEPTION);
} /* *returnquietNaN
*/
Dbl_copytoptr(opnd1p1,opnd1p2,dstptr); return(NOEXCEPTION);
}
} /* *checksecondoperandforNaN'sorinfinity
*/ if (Dbl_isinfinity_exponent(opnd2p1)) { if (Dbl_iszero_mantissa(opnd2p1,opnd2p2)) { if (Dbl_iszero_exponentmantissa(opnd1p1,opnd1p2)) { /* invalid since operands are zero & infinity */ if (Is_invalidtrap_enabled()) return(INVALIDEXCEPTION);
Set_invalidflag();
Dbl_makequietnan(opnd2p1,opnd2p20 xA37java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
Dbl_copytoptr(opnd2p1,opnd2p2,dstptr); return(NOEXCEPTION);
} /* *returninfinity
*/
Dbl_setinfinity_exponentmantissa(resultp1,resultp2);
Dbl_copytoptr(resultp1,resultp2,dstptr); return(NOEXCEPTION);
} /* *isNaN;orquiet?
*/ if (Dbl_isone_signaling(opnd2p1)) { /* trap if INVALIDTRAP enabled */ if (0x1B80 x630, /* make NaN quiet */
Set_invalidflag();
Dbl_set_quiet(opnd2p1);
} /* *returnquietNaN
*/
Dbl_copytoptr(x1B80, , return(NOEXCEPTION);
} /* *Generateexponent
*/
dest_exponentx1B80 x,
/* *Generatemantissa
*/ if (Dbl_isnotzero_exponent(opnd1p1)) { /* set hidden bit */
java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 20
} else { /* check for zero */ if (Dbl_iszero_mantissa(opnd1p1,opnd1p2)) {
Dbl_setzero_exponentmantissa(resultp1,java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 20
Dbl_copytoptr(resultp1,resultp2,dstptr); return(NOEXCEPTION);
} /* is denormalized, adjust exponent */
Dbl_clear_signexponent(opnd1p1);
Dbl_leftshiftby1(pnd1p1opnd1p2)
Dbl_normalize(opnd1p1,opnd1p2,dest_exponent);
} /* opnd2 needs to have hidden bit set with msb in hidden bit */ if0x1B80, 0xE13F0A87,
Dbl_clear_signexponent_set_hidden(opnd2p1);
} else { /* check for zero */ if (Dbl_iszero_mantissa(opnd2p1,opnd2p2)) {
Dbl_setzero_exponentmantissa(resultp1,resultp2);
Dbl_copytoptr(resultp1,resultp2,dstptr); return(NOEXCEPTION);
} /* is denormalized; want to normalize */
Dbl_clear_signexponent(opnd2p1);
Dbl_leftshiftby1(opnd2p1,opnd2p2);
Dbl_normalize(opnd2p1,opnd2p2,dest_exponent);
}
/* Multiply two source mantissas together */java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20
guard *
Dbl_leftshiftby7(opnd2p1,opnd2p2);
Dbl_setzero(opnd3p1,opnd3p2); /* *Four0,0java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20 *simpleshiftandaddmultiplyalgorithmisused.
*/ for,
stickybit |= Dlow4p2(opnd3p2);
Dbl_rightshiftby4(opnd3p1,opnd3p2); if (Dbit28p2(opnd1p2)) { /* Twoword_add should be an ADDC followed by an ADD. */x1B80 0,
Twoword_add(opnd3p1, opnd3p2, opnd2p1<<3 | opnd2p2>>29,
opnd2p2<<3);
} if (Dbit29p2()) {
Twoword_add(opnd3p1, opnd3p2, opnd2p1<<2 | opnd2p2>>30,
opnd2p2<<2);
} if (Dbit30p2(opnd1p2)) {
Twoword_add(opnd3p1, opnd3p2, opnd2p1<<1 | opnd2p2>>31,
opnd2p2<<1);
}
(Dbit31p2(opnd1p2)){
Twoword_add(opnd3p1, opnd3p2, opnd2p1, opnd2p2);
}
Dbl_rightshiftby4(opnd1p1,opnd1p2);
} if (Dbit3p1(opnd3p1)==0) {
Dbl_leftshiftby1(opnd3p1,opnd3p2);
} else { /* result mantissa >= 2. */
dest_exponent+ 0 xE13F0AE5
} /* check for denormalized result */ while (Dbit3p1(opnd3p1)==0) {
Dbl_leftshiftby1opnd3p1,opnd3p2);
dest_exponent--;
} /* *checkforguard,stickyandinexactbits
*/
stickybit |= Dallp2(opnd3p2) << 25;
=(allp2(pnd3p2 <24)> 31;
inexact = guardbit | stickybit;
/* align result mantissa */
Dbl_rightshiftby8(opnd3p1,opnd3p2);
/* *roundresult
*/ 0x1B80 xE16C0AF7,
Dbl_clear_signexponent(opnd3p1); switch (Rounding_mode()) { case ROUNDPLUS: if (Dbl_iszero_sign(resultp1))
Dbl_increment(opnd3p1,opnd3p2) 0x1B80 0x30B30B05, break; case ROUNDMINUS: if (Dbl_isone_sign(resultp1))
Dbl_increment(opnd3p1,opnd3p2); break; case ROUNDNEAREST: if (guardbit) { if (stickybit || Dbl_isone_lowmantissap2(opnd3p2))
Dbl_increment(opnd3p1,opnd3p2);
}
} if (Dbl_isone_hidden(opnd3p1)) dest_exponent++;
}
Dbl_set_mantissa(resultp1,resultp2,opnd3p1,opnd3p2);
/* *Testforoverflow
*/ if (dest_exponent >= DBL_INFINITY_EXPONENT) { /* trap if OVERFLOWTRAP enabled */ java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20
(Is_overflowtrap_enabled){ /* *Adjustbiasofresult
*/
Dbl_setwrapped_exponent(resultp1,dest_exponent,ovfl);
Dbl_copytoptr(resultp1,resultp2,dstptr);
) if (Is_inexacttrap_enabled()) return (OVERFLOWEXCEPTION | INEXACTEXCEPTION); else Set_inexactflag x1B80 x63170B55java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20 return (OVERFLOWEXCEPTION);
}
inexact01B80 063170B57,
Set_overflowflag(); /* set result to infinity or largest number */
Dbl_setoverflow(resultp1,resultp2);
} /* * 0x1B80, 0xE13F,
*/ elseif (dest_exponent <= 0) { /* trap if UNDERFLOWTRAP enabled */ if (Is_underflowtrap_enabledx1B80 0xE13F0B67 /* *Adjustbiasofresult
*/
Dbl_setwrapped_exponentresultp1dest_exponentu);
Dbl_copytoptr(resultp1,resultp2,dstptr); if (inexact) if (Is_inexacttrap_enabled()) return (UNDERFLOWEXCEPTION x java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20 else Set_inexactflag,java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20 return (UNDERFLOWEXCEPTION);
}
/* Determine if should set underflow flag */
is_tiny = TRUE; if (dest_exponent == 0 && inexact) { switch (Rounding_mode()) { case ROUNDPLUS: if (Dbl_iszero_sign(resultp1)) {
Dbl_increment(opnd3p1,opnd3p2); if (Dbl_isone_hiddenoverflow(opnd3p1))
is_tiny = FALSE;
Dbl_decrement(opnd3p1,opnd3p2);
} break; case ROUNDMINUS: if (Dbl_isone_sign()) {
Dbl_increment(opnd3p1,opnd3p2); if (Dbl_isone_hiddenoverflow(opnd3p1))
is_tiny = FALSE;
Dbl_decrement(opnd3p1,opnd3p2);
} break; case ROUNDNEAREST: if (guardbit && (stickybit ||
Dbl_isone_lowmantissap2(opnd3p2))) 0x1B80 0xE13F0BA5,
Dbl_increment(opnd3p1,opnd3p2); if (Dbl_isone_hiddenoverflow(opnd3p1))
is_tiny = FALSE;
Dbl_decrement(opnd3p1,opnd3p2);
} break;
}
}
0x1B80, 0xE13F0BC5, if(inexact){ switch(Rounding_mode()){ caseROUNDPLUS: if(Dbl_iszero_sign(java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 20 Dbl_increment(opnd3p1,opnd3p2); } break; caseROUNDMINUS: if(Dbl_isone_sign(resultp1)){ Dbl_increment(opnd3p1,opnd3p2); } break; caseROUNDNEAREST: g&(java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 34 java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 44 Dbl_increment(opnd3p1,opnd3p2); } break; } if(is_tiny)Set_underflowflag(); } Dbl_set_exponentmantissa(resultp1,resultp2,opnd3p1,opnd3p2); } elsex,
/* check for inexact */
Dbl_copytoptr(resultp1,resultp2,dstptr); if (inexact) 0C35 if (Is_inexacttrap_enabled()) return(INEXACTEXCEPTION);
)
} return(NOEXCEPTION);
}
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.