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svg_loader util: fix the floating constant truncated to zero issue.

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fyi, the minimum value of the float is 1.175494351 E-38

@Issue: https://github.com/Samsung/thorvg/issues/899
This commit is contained in:
Hermet Park 2021-10-13 20:15:44 +09:00 • committed by Hermet Park
parent 1abee9f8d5
commit a3ecff9504
1 changed files with 5 additions and 12 deletions
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17
src/loaders/svg/tvgSvgUtil.cpp
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@ -22,8 +22,6 @@
#include <math.h>
#include <memory.h>
#include <ctype.h>
#include <errno.h>
#include "tvgSvgUtil.h"
/************************************************************************/
@ -32,7 +30,7 @@
static inline bool _floatExact(float a, float b)
{
return memcmp(&a, &b, sizeof (float)) == 0;
return memcmp(&a, &b, sizeof(float)) == 0;
}
static uint8_t _hexCharToDec(const char c)
@ -178,15 +176,10 @@ float svgUtilStrtof(const char *nPtr, char **endPtr)
goto success;
}
if ((_floatExact(val, 2.2250738585072011f)) && ((minus_e * static_cast<int>(exponentPart)) == -308)) {
val *= 1.0e-308f;
a = iter;
errno = ERANGE;
goto success;
}
if ((_floatExact(val, 2.2250738585072012f)) && ((minus_e * static_cast<int>(exponentPart)) <= -308)) {
val *= 1.0e-308f;
//if ((_floatExact(val, 2.2250738585072011f)) && ((minus_e * static_cast<int>(exponentPart)) <= -308)) {
if ((_floatExact(val, 1.175494351f)) && ((minus_e * static_cast<int>(exponentPart)) <= -38)) {
//val *= 1.0e-308f;
val *= 1.0e-38f;
a = iter;
goto success;
}