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Diffstat (limited to 'src/backend/utils/adt/float.c')
-rw-r--r--src/backend/utils/adt/float.c126
1 files changed, 64 insertions, 62 deletions
diff --git a/src/backend/utils/adt/float.c b/src/backend/utils/adt/float.c
index 4c9e468d5c3..f4ceb26248c 100644
--- a/src/backend/utils/adt/float.c
+++ b/src/backend/utils/adt/float.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.108 2004/08/29 04:12:51 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/float.c,v 1.109 2004/08/29 05:06:49 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -102,6 +102,7 @@ static void CheckFloat4Val(double val);
static void CheckFloat8Val(double val);
static int float4_cmp_internal(float4 a, float4 b);
static int float8_cmp_internal(float8 a, float8 b);
+
#ifndef HAVE_CBRT
static double cbrt(double x);
#endif /* HAVE_CBRT */
@@ -123,10 +124,11 @@ get_float8_infinity(void)
/* C99 standard way */
return (double) INFINITY;
#else
+
/*
* On some platforms, HUGE_VAL is an infinity, elsewhere it's just the
- * largest normal double. We assume forcing an overflow will get us
- * a true infinity.
+ * largest normal double. We assume forcing an overflow will get us a
+ * true infinity.
*/
return (double) (HUGE_VAL * HUGE_VAL);
#endif
@@ -139,10 +141,11 @@ get_float4_infinity(void)
/* C99 standard way */
return (float) INFINITY;
#else
+
/*
* On some platforms, HUGE_VAL is an infinity, elsewhere it's just the
- * largest normal double. We assume forcing an overflow will get us
- * a true infinity.
+ * largest normal double. We assume forcing an overflow will get us a
+ * true infinity.
*/
return (float) (HUGE_VAL * HUGE_VAL);
#endif
@@ -183,7 +186,7 @@ get_float4_nan(void)
int
is_infinite(double val)
{
- int inf = isinf(val);
+ int inf = isinf(val);
if (inf == 0)
return 0;
@@ -250,20 +253,19 @@ float4in(PG_FUNCTION_ARGS)
/*
* endptr points to the first character _after_ the sequence we
- * recognized as a valid floating point number. orig_num points to
- * the original input string.
+ * recognized as a valid floating point number. orig_num points to the
+ * original input string.
*/
orig_num = num;
/*
- * Check for an empty-string input to begin with, to avoid
- * the vagaries of strtod() on different platforms.
+ * Check for an empty-string input to begin with, to avoid the
+ * vagaries of strtod() on different platforms.
*
- * In releases prior to 8.0, we accepted an empty string as valid
- * input (yielding a float4 of 0). In 8.0, we accept empty
- * strings, but emit a warning noting that the feature is
- * deprecated. In 8.1+, the warning should be replaced by an
- * error.
+ * In releases prior to 8.0, we accepted an empty string as valid input
+ * (yielding a float4 of 0). In 8.0, we accept empty strings, but emit
+ * a warning noting that the feature is deprecated. In 8.1+, the
+ * warning should be replaced by an error.
*/
if (*num == '\0')
{
@@ -286,9 +288,9 @@ float4in(PG_FUNCTION_ARGS)
if (endptr == num || errno != 0)
{
/*
- * C99 requires that strtod() accept NaN and [-]Infinity, but
- * not all platforms support that yet (and some accept them but
- * set ERANGE anyway...) Therefore, we check for these inputs
+ * C99 requires that strtod() accept NaN and [-]Infinity, but not
+ * all platforms support that yet (and some accept them but set
+ * ERANGE anyway...) Therefore, we check for these inputs
* ourselves.
*/
if (pg_strncasecmp(num, "NaN", 3) == 0)
@@ -303,7 +305,7 @@ float4in(PG_FUNCTION_ARGS)
}
else if (pg_strncasecmp(num, "-Infinity", 9) == 0)
{
- val = - get_float4_infinity();
+ val = -get_float4_infinity();
endptr = num + 9;
}
else if (errno == ERANGE)
@@ -322,13 +324,13 @@ float4in(PG_FUNCTION_ARGS)
{
/*
* Many versions of Solaris have a bug wherein strtod sets endptr
- * to point one byte beyond the end of the string when given
- * "inf" or "infinity".
+ * to point one byte beyond the end of the string when given "inf"
+ * or "infinity".
*/
if (endptr != num && endptr[-1] == '\0')
endptr--;
}
-#endif /* HAVE_BUGGY_SOLARIS_STRTOD */
+#endif /* HAVE_BUGGY_SOLARIS_STRTOD */
/* skip trailing whitespace */
while (*endptr != '\0' && isspace((unsigned char) *endptr))
@@ -373,13 +375,14 @@ float4out(PG_FUNCTION_ARGS)
strcpy(ascii, "-Infinity");
break;
default:
- {
- int ndig = FLT_DIG + extra_float_digits;
- if (ndig < 1)
- ndig = 1;
+ {
+ int ndig = FLT_DIG + extra_float_digits;
- sprintf(ascii, "%.*g", ndig, num);
- }
+ if (ndig < 1)
+ ndig = 1;
+
+ sprintf(ascii, "%.*g", ndig, num);
+ }
}
PG_RETURN_CSTRING(ascii);
@@ -427,26 +430,25 @@ float8in(PG_FUNCTION_ARGS)
/*
* endptr points to the first character _after_ the sequence we
- * recognized as a valid floating point number. orig_num points to
- * the original input string.
+ * recognized as a valid floating point number. orig_num points to the
+ * original input string.
*/
orig_num = num;
/*
- * Check for an empty-string input to begin with, to avoid
- * the vagaries of strtod() on different platforms.
+ * Check for an empty-string input to begin with, to avoid the
+ * vagaries of strtod() on different platforms.
*
- * In releases prior to 8.0, we accepted an empty string as valid
- * input (yielding a float8 of 0). In 8.0, we accept empty
- * strings, but emit a warning noting that the feature is
- * deprecated. In 8.1+, the warning should be replaced by an
- * error.
+ * In releases prior to 8.0, we accepted an empty string as valid input
+ * (yielding a float8 of 0). In 8.0, we accept empty strings, but emit
+ * a warning noting that the feature is deprecated. In 8.1+, the
+ * warning should be replaced by an error.
*/
if (*num == '\0')
{
ereport(WARNING,
(errcode(ERRCODE_WARNING_DEPRECATED_FEATURE),
- errmsg("deprecated input syntax for type double precision: \"\""),
+ errmsg("deprecated input syntax for type double precision: \"\""),
errdetail("This input will be rejected in "
"a future release of PostgreSQL.")));
PG_RETURN_FLOAT8(0.0);
@@ -463,9 +465,9 @@ float8in(PG_FUNCTION_ARGS)
if (endptr == num || errno != 0)
{
/*
- * C99 requires that strtod() accept NaN and [-]Infinity, but
- * not all platforms support that yet (and some accept them but
- * set ERANGE anyway...) Therefore, we check for these inputs
+ * C99 requires that strtod() accept NaN and [-]Infinity, but not
+ * all platforms support that yet (and some accept them but set
+ * ERANGE anyway...) Therefore, we check for these inputs
* ourselves.
*/
if (pg_strncasecmp(num, "NaN", 3) == 0)
@@ -480,14 +482,14 @@ float8in(PG_FUNCTION_ARGS)
}
else if (pg_strncasecmp(num, "-Infinity", 9) == 0)
{
- val = - get_float8_infinity();
+ val = -get_float8_infinity();
endptr = num + 9;
}
else if (errno == ERANGE)
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
- errmsg("\"%s\" is out of range for type double precision",
- orig_num)));
+ errmsg("\"%s\" is out of range for type double precision",
+ orig_num)));
else
ereport(ERROR,
(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
@@ -499,13 +501,13 @@ float8in(PG_FUNCTION_ARGS)
{
/*
* Many versions of Solaris have a bug wherein strtod sets endptr
- * to point one byte beyond the end of the string when given
- * "inf" or "infinity".
+ * to point one byte beyond the end of the string when given "inf"
+ * or "infinity".
*/
if (endptr != num && endptr[-1] == '\0')
endptr--;
}
-#endif /* HAVE_BUGGY_SOLARIS_STRTOD */
+#endif /* HAVE_BUGGY_SOLARIS_STRTOD */
/* skip trailing whitespace */
while (*endptr != '\0' && isspace((unsigned char) *endptr))
@@ -515,8 +517,8 @@ float8in(PG_FUNCTION_ARGS)
if (*endptr != '\0')
ereport(ERROR,
(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
- errmsg("invalid input syntax for type double precision: \"%s\"",
- orig_num)));
+ errmsg("invalid input syntax for type double precision: \"%s\"",
+ orig_num)));
if (!isinf(val))
CheckFloat8Val(val);
@@ -546,13 +548,14 @@ float8out(PG_FUNCTION_ARGS)
strcpy(ascii, "-Infinity");
break;
default:
- {
- int ndig = DBL_DIG + extra_float_digits;
- if (ndig < 1)
- ndig = 1;
+ {
+ int ndig = DBL_DIG + extra_float_digits;
- sprintf(ascii, "%.*g", ndig, num);
- }
+ if (ndig < 1)
+ ndig = 1;
+
+ sprintf(ascii, "%.*g", ndig, num);
+ }
}
PG_RETURN_CSTRING(ascii);
@@ -1474,8 +1477,8 @@ dpow(PG_FUNCTION_ARGS)
float8 result;
/*
- * The SQL spec requires that we emit a particular SQLSTATE error
- * code for certain error conditions.
+ * The SQL spec requires that we emit a particular SQLSTATE error code
+ * for certain error conditions.
*/
if ((arg1 == 0 && arg2 < 0) ||
(arg1 < 0 && floor(arg2) != arg2))
@@ -1543,8 +1546,8 @@ dlog1(PG_FUNCTION_ARGS)
float8 result;
/*
- * Emit particular SQLSTATE error codes for ln(). This is required
- * by the SQL standard.
+ * Emit particular SQLSTATE error codes for ln(). This is required by
+ * the SQL standard.
*/
if (arg1 == 0.0)
ereport(ERROR,
@@ -1573,9 +1576,8 @@ dlog10(PG_FUNCTION_ARGS)
/*
* Emit particular SQLSTATE error codes for log(). The SQL spec
- * doesn't define log(), but it does define ln(), so it makes
- * sense to emit the same error code for an analogous error
- * condition.
+ * doesn't define log(), but it does define ln(), so it makes sense to
+ * emit the same error code for an analogous error condition.
*/
if (arg1 == 0.0)
ereport(ERROR,
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-20 22:29:24 +0000