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Function dmd.backend.divcoeff.udiv_coefficients
Find coefficients for Algorithm 4.2: Optimized code generation of unsigned q=n/d for constant nonzero d
extern(C) bool udiv_coefficients
(
int N,
ulong d,
int* pshpre,
ulong* pm,
int* pshpost
) nothrow @safe;
Input
N 32 or 64 (width of divide) d divisor (not a power of 2)
Output
*pshpre pre-shift *pm factor *pshpost post-shift
Returns
true Use algorithm: t1 = MULUH(m, n) q = SRL(t1 + SRL(n - t1, 1), shpost - 1)
false Use algorithm: q = SRL(MULUH(m, SRL(n, shpre)), shpost)
Authors
License
Copyright © 1999-2024 by the D Language Foundation | Page generated by ddox.