From: ceriel <none@none>
Date: Mon, 31 Jul 1989 11:42:27 +0000 (+0000)
Subject: use con_float file, and use new interface to fif and fef routines
X-Git-Tag: release-5-5~2318
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=ef8450fce9541df571f30740f3e06b390b3a50bc;p=ack.git

use con_float file, and use new interface to fif and fef routines
---

diff --git a/mach/i86/cg/mach.c b/mach/i86/cg/mach.c
index 009f84d7c..0499ca465 100644
--- a/mach/i86/cg/mach.c
+++ b/mach/i86/cg/mach.c
@@ -41,149 +41,9 @@ con_mult(sz) word sz; {
 			(int)l&0xFFFF,(int)(l>>16)&0xFFFF);
 }
 
-#ifdef NOFLOAT
-con_float() {
-
-static int been_here;
-	if (argval != 4 && argval != 8)
-		fatal("bad fcon size");
-	fputs(".data4\t", codefile);
-	if (argval == 8)
-		fputs("0,", codefile);
-	fputs("0 !dummy float\n", codefile);
-	if ( !been_here++)
-	{
-	fputs("Warning : dummy float-constant(s)\n", stderr);
-	}
-}
-#else
+#define CODE_GENERATOR
 #define IEEEFLOAT
-
-con_float() {
-	double f;
-	double atof();
-	int i;
-	int j;
-	double frexp();
-#ifndef OWNFLOAT
-	int sign = 0;
-	int fraction[4] ;
-#else OWNFLOAT
-	float fl;
-	char *p;
-#endif OWNFLOAT
-
-	if (argval!= 4 && argval!= 8)	{
-		fprintf(stderr,"float constant size = %d\n",argval);
-		fatal("bad fcon size");
-	}
-	fprintf(codefile,"!float %s sz %d\n", str, argval);
-	f = atof(str);
-	if (f == 0) {
-		if (argval == 8) fprintf(codefile, ".data2 0, 0\n");
-		fprintf(codefile, ".data2 0, 0\n");
-		return;
-	}
-#ifdef OWNFLOAT
-	if (argval == 4) {
-		/* careful: avoid overflow */
-		double ldexp();
-		f = frexp(f, &i);
-		fl = f;
-		fl = frexp(fl,&j);
-		if (i+j > 127) {
-			/* overflow situation */
-			fprintf(codefile, ".data1 0%o, 0377, 0377, 0377 ! overflow\n",
-				f < 0 ? 0377 : 0177);
-			return;
-		}
-		if (i+j < -127) {
-			/* underflow situation */
-			fprintf(codefile, ".data1 0%o, 0200, 0, 0 ! underflow\n",
-				f < 0 ? 0200 : 0);
-			return;
-		}
-		fl = ldexp(fl, i+j);
-		p = (char *) &fl;
-	}
-	else {
-		p = (char *) &f;
-	}
-	fprintf(codefile, ".data1 0%o", *p++ & 0377);
-	for (i = argval-1; i; i--) {
-		fprintf(codefile,",0%o", *p++ & 0377);
-	}
-#else OWNFLOAT
-	f = frexp(f, &i);
-	if (f < 0) {
-		f = -f;
-		sign = 1;
-	}
-	while (f < 0.5) {
-		f += f;
-		i --;
-	}
-	f = 2*f - 1.0;		/* hidden bit */
-#ifdef IEEEFLOAT
-	if (argval == 4) {
-#endif IEEEFLOAT
-		i = (i + 128) & 0377;
-		fraction[0] = (sign << 15) | (i << 7);
-		for (j = 6; j>= 0; j--) {
-			f *= 2;
-			if (f >= 1.0) {
-				f -= 1.0;
-				fraction[0] |= (1 << j);
-			}
-		}
-#ifdef IEEEFLOAT
-	}
-	else {
-		i = (i + 1024) & 03777;
-		fraction[0] = (sign << 15) | (i << 4);
-		for (j = 3; j>= 0; j--) {
-			f *= 2;
-			if (f >= 1.0) {
-				fraction[0] |= (1 << j);
-				f -= 1.0;
-			}
-		}
-	}
-#endif IEEEFLOAT
-	for (i = 1; i < argval / 2; i++) {
-		fraction[i] = 0;
-		for (j = 15; j>= 0; j--) {
-			f *= 2;
-			if (f >= 1.0) {
-				fraction[i] |= (1 << j);
-				f -= 1.0;
-			}
-		}
-	}
-	if (f >= 0.5) {
-		for (i = argval/2 - 1; i >= 0; i--) {
-			for (j = 0; j < 16; j++) {
-				if (fraction[i] & (1 << j)) {
-					fraction[i] &= ~(1 << j);
-				}
-				else {
-					fraction[i] |= (1 << j);
-					break;
-				}
-			}
-			if (j != 16) break;
-		}
-	}
-	for (i = 0; i < argval/2; i++) {
-		fprintf(codefile,
-			i != 0 ? ", 0%o, 0%o" : ".data1 0%o, 0%o", 
-			(fraction[i]>>8)&0377,
-			fraction[i]&0377);
-	}
-#endif OWNFLOAT
-	putc('\n', codefile);
-}
-#endif
+#include <con_float>
 
 /*
 
diff --git a/mach/i86/cg/table b/mach/i86/cg/table
index 1beab9ca9..a4b4796f2 100644
--- a/mach/i86/cg/table
+++ b/mach/i86/cg/table
@@ -820,20 +820,10 @@ dvf $1==4	| | | | cal ".dvf4" asp 4 |
 dvf $1==8	| | | | cal ".dvf8" asp 8 |
 ngf $1==4	| | | | cal ".ngf4" |
 ngf $1==8	| | | | cal ".ngf8" |
-fif $1==4	| | | | cal ".fif4" |
-fif $1==8	| | | | cal ".fif8" |
-fef $1==4	| X_REG X_REG |
-		remove(ALL)
-		"push %[2]"
-		"push %[2]"
-		"push %[1]"	| | cal ".fef4" |
-fef $1==8	| X_REG X_REG X_REG X_REG |
-		remove(ALL)
-		"push %[4]"
-		"push %[4]"
-		"push %[3]"
-		"push %[2]"
-		"push %[1]"	| | cal ".fef8" |
+fif $1==4	| | | | lor 1 cal ".fif4" asp 2 |
+fif $1==8	| | | | lor 1 cal ".fif8" asp 2 |
+fef $1==4	| | | | lor 1 adp 0-2 cal ".fef4" |
+fef $1==8	| | | | lor 1 adp 0-2 cal ".fef8" |
 
 /****************************************
  * Group 6 : pointer arithmetic.	*