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Index
float SPAbs( float fnum1 );
Calculate the absolute value of a given floating point number
absolute value of fnum1 Flags: zero : result is zero negative : result is negative overflow : 0
float SPAdd( float fnum1, float fnum2 );
Calculate the sum of two ffp numbers
sum of fnum1 and fnum2. Flags: zero : result is zero negative : result is negative overflow : result is too large or too small for ffp format
float SPCeil( float y );
Calculate the least integer ffp-number greater than or equal to fnum1
Flags: zero : result is zero negative : result is negative overflow : 0
LONG SPCmp( float fnum1, float fnum2 );
Compares two FFP numbers.
+1 : fnum1 > fnum2 0 : fnum1 = fnum2 -1 : fnum1 < fnum2 Flags: zero : fnum2 = fnum1 negative : fnum2 < fnum1 overflow : 0
float SPDiv( float fnum1, float fnum2 );
Divide two ffp numbers fnum = fnum2 / fnum1;
Flags: zero : result is zero negative : result is negative overflow : result is out of range
The parameters are swapped!
LONG SPFix( float fnum );
Convert ffp-number to integer
absolute value of fnum1 Flags: zero : result is zero negative : result is negative overflow : ffp out of integer-range
float SPFloor( float y );
Calculate the largest integer ffp-number less than or equal to fnum
FFP number Flags: zero : result is zero negative : result is negative overflow : 0 (???)
floor(10.5) = 10 floor(0.5) = 0 floor(-0.5) = -1 floor(-10.5)= -11
float SPFlt( LONG inum );
FFP number Flags: zero : result is zero negative : result is negative overflow : ffp is not exactly the integer
float SPMul( float fnum1, float fnum2 );
Multiply two ffp numbers fnum = fnum1 * fnum2;
FFP number Flags: zero : result is zero negative : result is negative overflow : result is out of range
float SPNeg( float fnum1 );
Calculate fnum1*(-1)
-fnum1 Flags: zero : result is zero negative : result is negative overflow : 0
float SPSub( float fnum1, float fnum2 );
Subtract two floating point numbers fnum = fnum2 - fnum1;
SPAdd()
LONG SPTst( float fnum );
Compare a ffp-number against zero.
+1 : fnum > 0.0 0 : fnum = 0.0 -1 : fnum < 0.0 Flags: zero : result is zero negative : result is negative overflow : 0