/* $Id$ */
-/*
+/*
#define CODE_GENERATOR for code generator
#define CODE_EXPANDER for code expander
Unfortunately, the IEEE standard does not define the byte-order.
depends on the #defines
- FL_MSL_AT_LOW_ADDRESS 1 if most significant long is at low address
- FL_MSW_AT_LOW_ADDRESS 1 if most significant word is at low address
- FL_MSB_AT_LOW_ADDRESS 1 if most significant byte is at low address
+ FL_MSL_AT_LOW_ADDRESS 1 if most significant long is at low address
+ FL_MSW_AT_LOW_ADDRESS 1 if most significant word is at low address
+ FL_MSB_AT_LOW_ADDRESS 1 if most significant byte is at low address
*/
#ifdef IEEEFLOAT
#define USE_FLT
#define FL_MSB_AT_LOW_ADDRESS 0
#endif
-#define I0 ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) \
- + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
-#define I1 ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) \
- + (FL_MSB_AT_LOW_ADDRESS ? 1 : 0))
-#define I2 ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 2 : 0) \
- + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
-#define I3 ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 2 : 0) \
- + (FL_MSB_AT_LOW_ADDRESS ? 1 : 0))
-#define I4 ((FL_MSL_AT_LOW_ADDRESS ? 4 : 0) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) \
- + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
-#define I5 ((FL_MSL_AT_LOW_ADDRESS ? 4 : 0) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) \
- + (FL_MSB_AT_LOW_ADDRESS ? 1 : 0))
-#define I6 ((FL_MSL_AT_LOW_ADDRESS ? 4 : 0) + (FL_MSW_AT_LOW_ADDRESS ? 2 : 0) \
- + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
-#define I7 ((FL_MSL_AT_LOW_ADDRESS ? 4 : 0) + (FL_MSW_AT_LOW_ADDRESS ? 2 : 0) \
- + (FL_MSB_AT_LOW_ADDRESS ? 1 : 0))
+#define I0 \
+ ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) \
+ + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
+#define I1 \
+ ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) \
+ + (FL_MSB_AT_LOW_ADDRESS ? 1 : 0))
+#define I2 \
+ ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 2 : 0) \
+ + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
+#define I3 \
+ ((FL_MSL_AT_LOW_ADDRESS ? 0 : 4) + (FL_MSW_AT_LOW_ADDRESS ? 2 : 0) \
+ + (FL_MSB_AT_LOW_ADDRESS ? 1 : 0))
+#define I4 \
+ ((FL_MSL_AT_LOW_ADDRESS ? 4 : 0) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) \
+ + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
+#define I5 \
+ ((FL_MSL_AT_LOW_ADDRESS ? 4 : 0) + (FL_MSW_AT_LOW_ADDRESS ? 0 : 2) \
+ + (FL_MSB_AT_LOW_ADDRESS ? 1 : 0))
+#define I6 \
+ ((FL_MSL_AT_LOW_ADDRESS ? 4 : 0) + (FL_MSW_AT_LOW_ADDRESS ? 2 : 0) \
+ + (FL_MSB_AT_LOW_ADDRESS ? 0 : 1))
+#define I7 \
+ ((FL_MSL_AT_LOW_ADDRESS ? 4 : 0) + (FL_MSW_AT_LOW_ADDRESS ? 2 : 0) \
+ + (FL_MSB_AT_LOW_ADDRESS ? 1 : 0))
#ifndef USE_FLT
-static int
-float_cst(str, sz, buf)
- char *str, *buf;
- int sz;
+static int float_cst(str, sz, buf) char *str, *buf;
+int sz;
{
int i;
- char *p;
+ char* p;
float fl;
double f;
double atof();
- if (sz!= 4 && sz!= 8) {
+ if (sz != 4 && sz != 8)
+ {
return 1;
}
f = atof(str);
- if (sz == 4) {
+ if (sz == 4)
+ {
fl = f;
- p = (char *) &fl;
+ p = (char*)&fl;
}
- else {
- p = (char *) &f;
+ else
+ {
+ p = (char*)&f;
}
- for (i = sz; i; i--) {
+ for (i = sz; i; i--)
+ {
*buf++ = *p++;
}
return 0;
#include <ctype.h>
#include <flt_arith.h>
-int
-float_cst(str, sz, buf)
- char *str, *buf;
- int sz;
+int float_cst(str, sz, buf) char *str, *buf;
+int sz;
{
int overflow = 0;
flt_arith e;
- if (sz!= 4 && sz!= 8) {
+ if (sz != 4 && sz != 8)
+ {
return 1;
}
flt_str2flt(str, &e);
#ifdef IEEEFLOAT
- if (sz == 4) {
+ if (sz == 4)
+ {
#endif
#ifdef PDPFLOAT
e.flt_exp += 129;
#else
- e.flt_exp += 127;
+ e.flt_exp += 127;
#endif
- if (e.flt_mantissa.flt_h_32 == 0) e.flt_exp = 0;
+ if (e.flt_mantissa.flt_h_32 == 0)
+ e.flt_exp = 0;
#ifdef IEEEFLOAT
- if (e.flt_mantissa.flt_h_32 & 0x80) {
+ if (e.flt_mantissa.flt_h_32 & 0x80)
+ {
/* rounding */
- if ((e.flt_mantissa.flt_h_32 & 0xffffff00) == 0xffffff00) {
+ if ((e.flt_mantissa.flt_h_32 & 0xffffff00) == 0xffffff00)
+ {
e.flt_exp++;
e.flt_mantissa.flt_h_32 = 0x80000000;
}
- else {
+ else
+ {
e.flt_mantissa.flt_h_32 += 0x80;
}
}
- if (e.flt_exp >= 255) {
+ if (e.flt_exp >= 255)
+ {
overflow = 1;
e.flt_exp = 255;
e.flt_mantissa.flt_h_32 = e.flt_mantissa.flt_l_32 = 0;
}
- if (e.flt_exp <= 0) {
+ if (e.flt_exp <= 0)
+ {
flt_b64_sft(&(e.flt_mantissa), 1);
- if (e.flt_exp < 0) {
+ if (e.flt_exp < 0)
+ {
flt_b64_sft(&(e.flt_mantissa), -e.flt_exp);
e.flt_exp = 0;
}
}
#endif
#ifndef IEEEFLOAT
- if (sz == 4 && (e.flt_mantissa.flt_h_32 & 0x80)) {
+ if (sz == 4 && (e.flt_mantissa.flt_h_32 & 0x80))
+ {
/* rounding */
- if ((e.flt_mantissa.flt_h_32 & 0xffffff00) == 0xffffff00) {
+ if ((e.flt_mantissa.flt_h_32 & 0xffffff00) == 0xffffff00)
+ {
e.flt_exp++;
e.flt_mantissa.flt_h_32 = 0x80000000;
}
- else {
+ else
+ {
e.flt_mantissa.flt_h_32 += 0x80;
}
}
- if (sz == 8 && (e.flt_mantissa.flt_l_32 & 0x80)) {
+ if (sz == 8 && (e.flt_mantissa.flt_l_32 & 0x80))
+ {
/* rounding */
- if ((e.flt_mantissa.flt_l_32 & 0xffffff00) == 0xffffff00) {
+ if ((e.flt_mantissa.flt_l_32 & 0xffffff00) == 0xffffff00)
+ {
e.flt_mantissa.flt_l_32 = 0;
- if (e.flt_mantissa.flt_h_32 == 0xffffffff) {
+ if (e.flt_mantissa.flt_h_32 == 0xffffffff)
+ {
e.flt_exp++;
e.flt_mantissa.flt_h_32 = 0x80000000;
}
- else e.flt_mantissa.flt_h_32++;
+ else
+ e.flt_mantissa.flt_h_32++;
}
- else {
+ else
+ {
e.flt_mantissa.flt_l_32 += 0x80;
}
}
- if (e.flt_exp > 255) {
+ if (e.flt_exp > 255)
+ {
overflow = 1;
e.flt_exp = 255;
e.flt_mantissa.flt_h_32 = e.flt_mantissa.flt_l_32 = 0xffffffff;
}
#endif
buf[I0] = (e.flt_sign << 7) | (e.flt_exp >> 1);
- buf[I1] = ((e.flt_exp&1) << 7) |
- ((e.flt_mantissa.flt_h_32 & 0x7fffffff) >> 24);
+ buf[I1] = ((e.flt_exp & 1) << 7) | ((e.flt_mantissa.flt_h_32 & 0x7fffffff) >> 24);
buf[I2] = e.flt_mantissa.flt_h_32 >> 16;
buf[I3] = e.flt_mantissa.flt_h_32 >> 8;
#ifndef IEEEFLOAT
- if (sz == 8) {
+ if (sz == 8)
+ {
buf[I4] = e.flt_mantissa.flt_h_32;
buf[I5] = e.flt_mantissa.flt_l_32 >> 24;
buf[I6] = e.flt_mantissa.flt_l_32 >> 16;
flt_b64_sft(&(e.flt_mantissa), -24);
#ifdef IEEEFLOAT
}
- else {
+ else
+ {
e.flt_exp += 1023;
- if (e.flt_mantissa.flt_h_32 == 0) e.flt_exp = 0;
- if (e.flt_mantissa.flt_l_32 & 0x400) {
+ if (e.flt_mantissa.flt_h_32 == 0)
+ e.flt_exp = 0;
+ if (e.flt_mantissa.flt_l_32 & 0x400)
+ {
/* rounding */
- if ((e.flt_mantissa.flt_l_32 & 0xfffff800) == 0xfffff800) {
+ if ((e.flt_mantissa.flt_l_32 & 0xfffff800) == 0xfffff800)
+ {
e.flt_mantissa.flt_l_32 = 0;
- if (e.flt_mantissa.flt_h_32 == 0xffffffff) {
+ if (e.flt_mantissa.flt_h_32 == 0xffffffff)
+ {
e.flt_exp++;
e.flt_mantissa.flt_h_32 = 0x80000000;
}
- else e.flt_mantissa.flt_h_32++;
+ else
+ e.flt_mantissa.flt_h_32++;
}
- else {
+ else
+ {
e.flt_mantissa.flt_l_32 += 0x400;
}
}
- if (e.flt_exp >= 2047) {
+ if (e.flt_exp >= 2047)
+ {
overflow = 1;
e.flt_exp = 2047;
e.flt_mantissa.flt_h_32 = e.flt_mantissa.flt_l_32 = 0;
}
- if (e.flt_exp <= 0) {
+ if (e.flt_exp <= 0)
+ {
flt_b64_sft(&(e.flt_mantissa), 1);
- if (e.flt_exp < 0) {
+ if (e.flt_exp < 0)
+ {
flt_b64_sft(&(e.flt_mantissa), -e.flt_exp);
e.flt_exp = 0;
}
}
buf[I0] = (e.flt_sign << 7) | (e.flt_exp >> 4);
- buf[I1] = ((e.flt_exp & 017)<< 4) | ((e.flt_mantissa.flt_h_32 >> 27) & 017);
+ buf[I1] = ((e.flt_exp & 017) << 4) | ((e.flt_mantissa.flt_h_32 >> 27) & 017);
buf[I2] = e.flt_mantissa.flt_h_32 >> 19;
buf[I3] = e.flt_mantissa.flt_h_32 >> 11;
buf[I4] = e.flt_mantissa.flt_h_32 >> 3;
flt_b64_sft(&(e.flt_mantissa), -53);
}
#endif
-#if ! FL_MSL_AT_LOW_ADDRESS
- if (sz == 4) {
+#if !FL_MSL_AT_LOW_ADDRESS
+ if (sz == 4)
+ {
buf[I4] = buf[I0];
buf[I5] = buf[I1];
buf[I6] = buf[I2];
buf[I7] = buf[I3];
}
#endif
- if (overflow) {
+ if (overflow)
+ {
return 2;
}
return 0;
int rval = float_cst(str, (int)argval, buf);
int i;
- if (rval == 1) {
- fprintf(stderr,"float constant size = %d\n",(int)argval);
+ if (rval == 1)
+ {
+ fprintf(stderr, "float constant size = %d\n", (int)argval);
fatal("bad fcon size");
}
- fprintf(codefile,"!float %s sz %d\n", str, (int)argval);
- if (rval == 2) {
+ fprintf(codefile, "!float %s sz %d\n", str, (int)argval);
+ if (rval == 2)
+ {
fprintf(stderr, "Warning: overflow in floating point constant %s\n", str);
}
fprintf(codefile, ".data1 0%o", buf[0] & 0377);
- for (i = 1; i < (int)argval; i++) {
+ for (i = 1; i < (int)argval; i++)
+ {
fprintf(codefile, ",0%o", buf[i] & 0377);
}
putc('\n', codefile);
#endif /* CODE_GENERATOR */
#ifdef CODE_EXPANDER
-con_float(str, argval)
- char *str;
- arith argval;
+con_float(str, argval) char* str;
+arith argval;
{
char buf[8];
int rval = float_cst(str, (int)argval, buf);
int i;
- if (rval == 1) {
+ if (rval == 1)
+ {
argval = 8;
rval = float_cst(str, 8, buf);
}
- for (i = 0; i < (int)argval; i++) {
+ for (i = 0; i < (int)argval; i++)
+ {
gen1(buf[i]);
}
}
public / ack.git / commitdiff