SPRUJ53C April 2024 – February 2025 TMS320F28P550SG , TMS320F28P550SJ , TMS320F28P559SG-Q1 , TMS320F28P559SJ-Q1
Fractional Portion of a 32-Bit Floating-Point Value
| MRa | CLA floating-point destination register (MR0 to MR3) |
| MRb | CLA floating-point source register (MR0 to MR3) |
LSW: 0000 0000 0000 bbaa
MSW: 0111 1110 0000 0000 Returns in MRa the fractional portion of the 32-bit floating-point value in MRb
This instruction does not affect any flags:
| Flag | TF | ZF | NF | LUF | LVF |
|---|---|---|---|---|---|
| Modified | No | No | No | No | No |
This is a single-cycle instruction.
MMOVIZ MR2, #19.625 ; MR2 = 19.625 (0x419D0000)
MFRACF32 MR3, MR2 ; MR3 = MFRACF32(MR2) = 0.625 (0x3F200000)0)