/*
- * Copyright (C) 1995-2010 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
#include "xmalloc.h"
-#ifndef HAVE_STRTOLD
-#define strtold(s, e) strtod(s, e)
-#endif
-
#ifdef _MSC_VER
#include <float.h>
#define isnan(x) _isnan(x)
{
return !_finite(x) && !_isnan(x);
}
+#define strtold(s, e) strtod(s, e)
+#define SIZEOF_LONG_DOUBLE_8
#endif
/** The number of extra precision rounding bits */
#define ROUNDING_BITS 2
-typedef uint32_t UINT32;
-
-#ifdef HAVE_LONG_DOUBLE
-#ifdef WORDS_BIGENDIAN
typedef union {
struct {
- UINT32 high;
- UINT32 mid;
- UINT32 low;
- } val;
- volatile long double d;
-} value_t;
+#ifdef WORDS_BIGENDIAN
+ uint32_t high;
#else
-typedef union {
- struct {
- UINT32 low;
- UINT32 mid;
- UINT32 high;
- } val;
- volatile long double d;
-} value_t;
+ uint32_t low;
+#endif
+#ifndef SIZEOF_LONG_DOUBLE_8
+ uint32_t mid;
#endif
-#else
#ifdef WORDS_BIGENDIAN
-typedef union {
- struct {
- UINT32 high;
- UINT32 low;
- } val;
- volatile double d;
-} value_t;
+ uint32_t low;
#else
-typedef union {
- struct {
- UINT32 low;
- UINT32 high;
+ uint32_t high;
+#endif
} val;
- volatile double d;
+ volatile long double d;
} value_t;
-#endif
-#endif
#define CLEAR_BUFFER(buffer) memset(buffer, 0, calc_buffer_size)
/** Exact flag. */
static int fc_exact = 1;
-#if 0
-static void fail_char(const char *str, unsigned int len, int pos)
-{
- if (*(str+pos))
- printf("ERROR: Unexpected character '%c'\n", *(str + pos));
- else
- printf("ERROR: Unexpected end of string\n");
- while (len-- && *str) printf("%c", *str++); printf("\n");
- while (pos--) printf(" "); printf("^\n");
- /* the front end has to to check constant strings */
- exit(-1);
-}
-#endif
-
/** pack machine-like */
static void *pack(const fp_value *int_float, void *packed)
{
if (in_val != out_val) {
out_val->sign = in_val->sign;
- memcpy(&out_val->desc, &in_val->desc, sizeof(out_val->desc));
+ out_val->desc = in_val->desc;
}
out_val->desc.clss = NORMAL;
return;
}
- if (exp_val > a->desc.mantissa_size) {
+ if (exp_val > (long)a->desc.mantissa_size) {
if (a != result)
memcpy(result, a, calc_buffer_size);
return calc_buffer_size;
}
-void *fc_val_from_str(const char *str, unsigned int len, const ieee_descriptor_t *desc, void *result)
+void *fc_val_from_str(const char *str, size_t len, const ieee_descriptor_t *desc, void *result)
{
char *buffer;
/* XXX excuse of an implementation to make things work */
- LLDBL val;
+ long double val;
fp_value *tmp = (fp_value*) alloca(calc_buffer_size);
ieee_descriptor_t tmp_desc;
return fc_cast(tmp, desc, (fp_value*) result);
}
-fp_value *fc_val_from_ieee754(LLDBL l, const ieee_descriptor_t *desc, fp_value *result)
+fp_value *fc_val_from_ieee754(long double l, const ieee_descriptor_t *desc, fp_value *result)
{
char *temp;
- int bias_res, bias_val, mant_val;
- value_t srcval;
- char sign;
- UINT32 exponent, mantissa0, mantissa1;
+ int bias_res, bias_val, mant_val;
+ value_t srcval;
+ char sign;
+ uint32_t exponent, mantissa0, mantissa1;
srcval.d = l;
bias_res = ((1 << (desc->exponent_size - 1)) - 1);
-#ifdef HAVE_LONG_DOUBLE
- mant_val = 63;
- bias_val = 0x3fff;
- sign = (srcval.val.high & 0x00008000) != 0;
- exponent = (srcval.val.high & 0x00007FFF) ;
- mantissa0 = srcval.val.mid;
- mantissa1 = srcval.val.low;
-#else /* no long double */
+#ifdef SIZEOF_LONG_DOUBLE_8
mant_val = 52;
bias_val = 0x3ff;
sign = (srcval.val.high & 0x80000000) != 0;
exponent = (srcval.val.high & 0x7FF00000) >> 20;
mantissa0 = srcval.val.high & 0x000FFFFF;
mantissa1 = srcval.val.low;
-#endif
-
-#ifdef HAVE_LONG_DOUBLE
- TRACEPRINTF(("val_from_float(%.8X%.8X%.8X)\n", ((int*)&l)[2], ((int*)&l)[1], ((int*)&l)[0]));/* srcval.val.high, srcval.val.mid, srcval.val.low)); */
- DEBUGPRINTF(("(%d-%.4X-%.8X%.8X)\n", sign, exponent, mantissa0, mantissa1));
#else
- TRACEPRINTF(("val_from_float(%.8X%.8X)\n", srcval.val.high, srcval.val.low));
- DEBUGPRINTF(("(%d-%.3X-%.5X%.8X)\n", sign, exponent, mantissa0, mantissa1));
+ mant_val = 63;
+ bias_val = 0x3fff;
+ sign = (srcval.val.high & 0x00008000) != 0;
+ exponent = (srcval.val.high & 0x00007FFF) ;
+ mantissa0 = srcval.val.mid;
+ mantissa1 = srcval.val.low;
#endif
if (result == NULL) result = calc_buffer;
return result;
}
-LLDBL fc_val_to_ieee754(const fp_value *val)
+long double fc_val_to_ieee754(const fp_value *val)
{
fp_value *value;
fp_value *temp = NULL;
- int byte_offset;
+ unsigned byte_offset;
- UINT32 sign;
- UINT32 exponent;
- UINT32 mantissa0;
- UINT32 mantissa1;
+ uint32_t sign;
+ uint32_t exponent;
+ uint32_t mantissa0;
+ uint32_t mantissa1;
value_t buildval;
ieee_descriptor_t desc;
unsigned mantissa_size;
-#ifdef HAVE_LONG_DOUBLE
- desc.exponent_size = 15;
- desc.mantissa_size = 63;
- desc.explicit_one = 1;
- desc.clss = NORMAL;
-#else
+#ifdef SIZEOF_LONG_DOUBLE_8
desc.exponent_size = 11;
desc.mantissa_size = 52;
desc.explicit_one = 0;
desc.clss = NORMAL;
+#else
+ desc.exponent_size = 15;
+ desc.mantissa_size = 63;
+ desc.explicit_one = 1;
+ desc.clss = NORMAL;
#endif
mantissa_size = desc.mantissa_size + desc.explicit_one;
for (; (byte_offset<<3) < desc.mantissa_size; byte_offset++)
mantissa0 |= sc_sub_bits(_mant(value), mantissa_size, byte_offset) << ((byte_offset - 4) << 3);
-#ifdef HAVE_LONG_DOUBLE
- buildval.val.high = sign << 15;
- buildval.val.high |= exponent;
- buildval.val.mid = mantissa0;
- buildval.val.low = mantissa1;
-#else /* no long double */
+#ifdef SIZEOF_LONG_DOUBLE_8
mantissa0 &= 0x000FFFFF; /* get rid of garbage */
buildval.val.high = sign << 31;
buildval.val.high |= exponent << 20;
buildval.val.high |= mantissa0;
buildval.val.low = mantissa1;
+#else
+ buildval.val.high = sign << 15;
+ buildval.val.high |= exponent;
+ buildval.val.mid = mantissa0;
+ buildval.val.low = mantissa1;
#endif
TRACEPRINTF(("val_to_float: %d-%x-%x%x\n", sign, exponent, mantissa0, mantissa1));
char *fc_print(const fp_value *val, char *buf, int buflen, unsigned base)
{
char *mul_1;
- LLDBL flt_val;
+ long double flt_val;
mul_1 = (char*) alloca(calc_buffer_size);
break;
default:
flt_val = fc_val_to_ieee754(val);
-#ifdef HAVE_LONG_DOUBLE
/* XXX 30 is arbitrary */
snprintf(buf, buflen, "%.30LE", flt_val);
-#else
- snprintf(buf, buflen, "%.18E", flt_val);
-#endif
}
break;
break;
default:
flt_val = fc_val_to_ieee754(val);
-#ifdef HAVE_LONG_DOUBLE
snprintf(buf, buflen, "%LA", flt_val);
-#else
- snprintf(buf, buflen, "%A", flt_val);
-#endif
}
break;
if (0 < v && v < (1 << desc->exponent_size) - 1) {
/* exponent can be encoded, now check the mantissa */
v = value->desc.mantissa_size + ROUNDING_BITS - sc_get_lowest_set_bit(_mant(value));
- return v <= desc->mantissa_size;
+ return v <= (int)desc->mantissa_size;
}
return 0;
}
calc_buffer = (fp_value*) xmalloc(calc_buffer_size);
memset(calc_buffer, 0, calc_buffer_size);
DEBUGPRINTF(("init fltcalc:\n\tVALUE_SIZE = %d\ntCALC_BUFFER_SIZE = %d\n\tcalc_buffer = %p\n\n", value_size, calc_buffer_size, calc_buffer));
-#ifdef HAVE_LONG_DOUBLE
- DEBUGPRINTF(("\tUsing long double (1-15-64) interface\n"));
-#else
- DEBUGPRINTF(("\tUsing double (1-11-52) interface\n"));
-#endif
-#ifdef WORDS_BIGENDIAN
- DEBUGPRINTF(("\tWord order is big endian\n\n"));
-#else
- DEBUGPRINTF(("\tWord order is little endian\n\n"));
-#endif
}
}