Math API

Functions

	Name
word32	CheckRunTimeFastMath(void ) This function checks the runtime fastmath settings for the maximum size of an integer. It is important when a user is using a wolfCrypt library independently, as the FP_SIZE must match for each library in order for math to work correctly. This check is defined as CheckFastMathSettings(), which simply compares CheckRunTimeFastMath and FP_SIZE, returning 0 if there is a mismatch, or 1 if they match.
word32	CheckRunTimeSettings(void ) This function checks the compile time class settings. It is important when a user is using a wolfCrypt library independently, as the settings must match between libraries for math to work correctly. This check is defined as CheckCtcSettings(), which simply compares CheckRunTimeSettings and CTC_SETTINGS, returning 0 if there is a mismatch, or 1 if they match.

CheckRunTimeFastMath(void )
This function checks the runtime fastmath settings for the maximum size of an integer. It is important when a user is using a wolfCrypt library independently, as the FP_SIZE must match for each library in order for math to work correctly. This check is defined as CheckFastMathSettings(), which simply compares CheckRunTimeFastMath and FP_SIZE, returning 0 if there is a mismatch, or 1 if they match.

word32

CheckRunTimeSettings(void )
This function checks the compile time class settings. It is important when a user is using a wolfCrypt library independently, as the settings must match between libraries for math to work correctly. This check is defined as CheckCtcSettings(), which simply compares CheckRunTimeSettings and CTC_SETTINGS, returning 0 if there is a mismatch, or 1 if they match.

Functions Documentation

function CheckRunTimeFastMath

word32 CheckRunTimeFastMath(    void )

This function checks the runtime fastmath settings for the maximum size of an integer. It is important when a user is using a wolfCrypt library independently, as the FP_SIZE must match for each library in order for math to work correctly. This check is defined as CheckFastMathSettings(), which simply compares CheckRunTimeFastMath and FP_SIZE, returning 0 if there is a mismatch, or 1 if they match.

Parameters:

none No parameters.

See:CheckRunTimeSettings

Return: FP_SIZE Returns FP_SIZE, corresponding to the max size available for the math library.

Example

if (CheckFastMathSettings() != 1) {return err_sys("Build vs. runtime fastmath FP_MAX_BITS mismatch\n");}// This is converted by the preprocessor to:// if ( (CheckRunTimeFastMath() == FP_SIZE) != 1) {// and confirms that the fast math settings match// the compile time settings

function CheckRunTimeSettings

word32 CheckRunTimeSettings(    void )

This function checks the compile time class settings. It is important when a user is using a wolfCrypt library independently, as the settings must match between libraries for math to work correctly. This check is defined as CheckCtcSettings(), which simply compares CheckRunTimeSettings and CTC_SETTINGS, returning 0 if there is a mismatch, or 1 if they match.

Parameters:

none No Parameters.

See:CheckRunTimeFastMath

Return: settings Returns the runtime CTC_SETTINGS (Compile Time Settings)