IntaRNA::PartitionArithmetic Class Reference

#include <PartitionArithmetic.h>

Static Public Member Functions
static Z_type	check (const Z_type x)
static Z_type	add (const Z_type a, const Z_type b)
static Z_type	multiply (const Z_type a, const Z_type b)
static Z_type	divide (const Z_type a, const Z_type b)
static Z_type	exp (const Z_type exponent)

Detailed Description

Checked nonnegative arithmetic for pair-probability partitions. Structural zero is exactly zero. Positive subnormals are rejected because their relative precision is not guaranteed. Ordinary sum rounding remains.

Member Function Documentation

add()

Z_type IntaRNA::PartitionArithmetic::add ( const Z_type  a, const Z_type  b  )

inlinestatic

Returns

checked sum of two nonnegative values

check()

Z_type IntaRNA::PartitionArithmetic::check ( const Z_type  x )

inlinestatic

Returns

x; throws on negative, NaN, infinite or positive subnormal values

divide()

Z_type IntaRNA::PartitionArithmetic::divide ( const Z_type  a, const Z_type  b  )

inlinestatic

Returns

checked quotient; denominator must be positive

exp()

Z_type IntaRNA::PartitionArithmetic::exp ( const Z_type  exponent )

inlinestatic

Returns

checked exponential; a finite exponent must yield a positive normal value

multiply()

Z_type IntaRNA::PartitionArithmetic::multiply ( const Z_type  a, const Z_type  b  )

inlinestatic

Returns

checked product; positive underflow is an error

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The documentation for this class was generated from the following file:

• src/IntaRNA/PartitionArithmetic.h