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Co-authored-by: Steve Baer <steve@mcneel.com>
Co-authored-by: Nathan Letwory <nathan@mcneel.com>
Co-authored-by: Dale Lear <dalelear@mcneel.com>
This commit is contained in:
Bozo The Builder
2019-11-05 18:13:55 -08:00
committed by Will Pearson
parent b844466e88
commit 799431a63b
130 changed files with 29557 additions and 9236 deletions
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39
opennurbs_string_values.cpp
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@@ -264,6 +264,20 @@ double ON_CleanNumber(
return value;
}
const ON_wString& ON_NTimesPowerOf10AsStringFail(const ON_wString& g_format, bool bLogError)
{
// The number being formatted might be bogus.
// This can occur when values are not properly initialized.
if (bLogError) // <- good place for debugging breakpoint
{
ON_ERROR("Unexpected result.");
}
// g_format is a valid string representation of the input value, so
// the user is seeing something that is correct, but may have
// scientific notation or lots of digits.
return g_format;
}
static
const ON_wString ON_NTimesPowerOf10AsString(
@@ -278,18 +292,29 @@ const ON_wString ON_NTimesPowerOf10AsString(
if (nullptr != clean_value)
*clean_value = value;
// returns n*(10^e) as a pretty string.
//const ON__UINT64 ten = 10;
if ( false == ON_IsValid(value) )
return ON_NTimesPowerOf10AsStringFail(g_format,false); // value is a nan or UNSET value.
// ON__UINT64 range is 0 to 18,446,744,073,709,551,615 = 1.8...e19
const double max_pretty_value = 1.0e18; // must be <= 18,446,744,073,709,551,615 ( 20 decimal digits )
const double min_pretty_value = 1.0 / max_pretty_value;
if (fabs(value) >= max_pretty_value || fabs(value) <= min_pretty_value)
return ON_NTimesPowerOf10AsStringFail(g_format,false); // value is too big or too small for a "pretty" format.
// returns n*(10^e) as a "pretty" string - no exponential notation that disturbs users.
ON__UINT64 q = 1;
ON__UINT64 i = 0;
ON__UINT64 f = 0;
if (e >= 0)
{
for (int ie = 0; ie < e; ie++)
q *= 10;
if (fabs((double)n)*fabs((double)q) >= max_pretty_value)
return ON_NTimesPowerOf10AsStringFail(g_format,false);
i = n*q;
f = 0;
}
@@ -298,6 +323,9 @@ const ON_wString ON_NTimesPowerOf10AsString(
// e is negative
for (int ie = 0; ie > e; ie--)
q *= 10;
if (fabs((double)n) <= min_pretty_value*fabs((double)q))
return ON_NTimesPowerOf10AsStringFail(g_format,false);
i = n / q;
f = n % q;
}
@@ -311,7 +339,7 @@ const ON_wString ON_NTimesPowerOf10AsString(
*clean_value = x;
return ON_wString::FormatToString(L"%llu", i);
}
wchar_t sf[32] = { 0 };
wchar_t sf[32] = { 0 }; // 32 is more than enough to hold the maximum of 20 digits
size_t sf_capacity = sizeof(sf) / sizeof(sf[i]);
size_t sfi = 0;
for (ON__UINT64 r = q / 10; r > 0 && sfi < sf_capacity; r /= 10)
@@ -329,8 +357,7 @@ const ON_wString ON_NTimesPowerOf10AsString(
}
}
ON_ERROR("Unexpected result.");
return g_format;
return ON_NTimesPowerOf10AsStringFail(g_format,false);
}