AMD 250 manual Comparisons among Two Floats

Software Optimization Guide for AMD64 Processors25112 Rev. 3.06 September 2005

Table 5: Comparisons among Two Floats

	Use this …			Instead of this.
float t = f1	- f2;		if (f1	<= f2)
if (FLOAT2INTCAST(t)		<= 0)
float t = f1	- f2;		if (f1	> f2)
if (FLOAT2INTCAST(t)		> 0)
float t = f1	- f2;		if (f1	>= f2)
f (FLOAT2UINTCAST(f)		<= 0x80000000U)

56 C and C++ Source-Level Optimizations Chapter 2