1. A method of implementing a floating point scaled fused multiply and accumulate (FMASc) operation in a floating point unit, the method comprising: multiplying mantissas of a floating point multiplier operand with a floating point multiplicand operand in a multiplier block to obtain a mantissa of a product; determining a count of the number of leading zeros (LZC) of the mantissa of a floating point addend operand in a LZC block; determining a pre-alignment shift value for the floating point addend operand based on the LZC, a scaling factor operand, and exponents of the floating point addend operand, the floating point multiplier operand, and the floating point multiplicand operand in a pre-alignment block; shifting the mantissa of the floating point addend operand with the pre-alignment shift value to obtain a pre-aligned addend in an alignment block; accumulating the mantissa of the product and the pre-aligned addend to obtain an intermediate result in an accumulator block; determining the number of leading zeros of the intermediate result in a leading zero anticipator block; determining a normalizing shift value based on the pre-alignment shift value and the number of leading zeros of the intermediate result; and normalizing the intermediate result based on the normalizing shift value in a normalization block to obtain a normalized output of the FMASc operation.