Module rustc_apfloat::ieee::sig

Implementation details of IeeeFloat significands, such as big integer arithmetic. As a rule of thumb, no functions in this module should dynamically allocate.

Functions

add	a += b + c where c is zero or one. Returns the carry flag.
add_or_sub	a += b or a -= b. Does not preserve b.
clear_bit	Clear the given bit.
cmp	Comparison (unsigned) of two significands.
decrement	Decrement in-place, return the borrow flag.
div	quotient = dividend / divisor. Returns the lost fraction. Does not preserve dividend or divisor.
each_chunk	For every consecutive chunk of bits bits from limbs, going from most significant to the least significant bits, call f to transform those bits and store the result back.
extract	Copies the bit vector of width src_bits from src, starting at bit SRC_LSB, to dst, such that the bit SRC_LSB becomes the least significant bit of dst. All high bits above src_bits in dst are zero-filled.
from_limbs	We want the most significant PRECISION bits of src. There may not be that many; extract what we can.
get_bit	Extracts the given bit.
increment	Increment in-place, return the carry flag.
is_all_zeros
mul	dst = a * b (for normal a and b). Returns the lost fraction.
olsb	One, not zero, based LSB. That is, returns 0 for a zeroed significand.
omsb	One, not zero, based MSB. That is, returns 0 for a zeroed significand.
set_bit	Sets the given bit.
shift_left	Shifts dst left bits bits, subtract bits from its exponent.
shift_right	Shifts dst right bits bits noting lost fraction.
sub	a -= b + c where c is zero or one. Returns the borrow flag.
widening_mul	[low, high] = a * b.