Infineon TriCore TC1.6P - CMP.F

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TriCore

TC1.6P & TC1.6E

32-bit Unified Processor Core

Instruction Set

V1.0 2013-07

User Manual (Volume 2) 3-401

CMP.F

Compare Float

Description

This instruction compares the IEEE-754-1985 single-precision floating-point operands and asserts bits in the

result if their associated condition is true:

bit [0] D[a] < D[b]

bit [1] D[a] == D[b]

bit [2] D[a] > D[b]

bit [3] Unordered

bit [4] D[a] is denormal

bit [5] D[b] is denormal

bits[31:06] are cleared.

The ‘unordered’ bit is asserted if either operand is a NaN.

Note:CMP.F is the only FPU instruction that does not substitute denormal operands for zero before computation.

CMP.FD[c], D[a], D[b] (RR)

D[c][0] = ieee754_lt(D[a], D[b]);

D[c][1] = ieee754_eq(D[a], D[b]);

D[c][2] = ieee754_gt(D[a], D[b]);

D[c][3] = (is_nan(D[a]) OR is_nan(D[b]));

D[c][4] = is_denorm(D[a]);

D[c][5] = is_denorm(D[b]);

Exception Flags

Examples

cmp.f d3, d1, d2

Infineon TriCore TC1.6P - CMP.F - Compare Float