SH-2A datasheet(93/501 Pages) RENESAS

Part #	SH-2A

Description	Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

PDF	501 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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93 / 501 page

Section 6 Instruction Descriptions

Rev. 3.00 Jul 08, 2005 page 79 of 484

REJ09B0051-0300

int abs;

abs = FR_HEX[n] & 0x7fffffff;

if(FPSCR_PR == 0) { /* Single-precision */

if(abs < 0x00800000){

if((FPSCR_DN == 1) || (abs == 0x00000000)){

if(sign_of(n) == 0)

{zero(n, 0); return(PZERO);}

else

{zero(n, 1); return(NZERO);}

}

else

return(DENORM);

}

else if(abs < 0x7f800000)

return(NORM);

else if(abs == 0x7f800000) {

if(sign_of(n) == 0)

return(PINF);

else

return(NINF);

}

else if(abs < 0x7fc00000)

return(qNaN);

else

return(sNaN);

}

else {

/* Double-precision */

if(abs < 0x00100000){

if((FPSCR_DN == 1) ||

((abs == 0x00000000) && (FR_HEX[n+1] == 0x00000000)){

if(sign_of(n) == 0)

{zero(n, 0); return(PZERO);}

else

{zero(n, 1); return(NZERO);}

}

else

return(DENORM);

}

else if(abs < 0x7ff00000) return(NORM);

else if((abs == 0x7ff00000) &&

(FR_HEX[n+1] == 0x00000000)) {

if(sign_of(n) == 0) return(PINF);

else

return(NINF);

}

else if(abs < 0x7ff80000) return(qNaN);

else

return(sNaN);

SH-2A Datasheet(PDF) 93 Page - Renesas Technology Corp

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