Combine monadic ∊ and ⊐ radix lookups with a macro

This commit is contained in:
Marshall Lochbaum 2022-10-22 16:01:45 -04:00
parent 552e4f6751
commit 2207d9f1bb

View File

@ -6,6 +6,32 @@
B not_c1(B t, B x);
B shape_c1(B t, B x);
#define RADIX_LOOKUP_i32(INIT, SETTAB) \
/* Count keys */ \
for (usz j=0; j<2*rx; j++) c0[j] = 0; \
for (usz i=0; i<n; i++) { u32 v=v0[i]; c0[(u8)(v>>24)]++; c1[(u8)(v>>16)]++; } \
/* Exclusive prefix sum */ \
usz s0=0, s1=0; \
for (usz j=0; j<rx; j++) { \
usz p0 = s0, p1 = s1; \
s0 += c0[j]; s1 += c1[j]; \
c0[j] = p0; c1[j] = p1; \
} \
/* Radix moves */ \
for (usz i=0; i<n; i++) { u32 v=v0[i]; u8 k=k0[i]=(u8)(v>>24); usz c=c0[k]++; v1[c]=v; } \
for (usz i=0; i<n; i++) { u32 v=v1[i]; u8 k=k1[i]=(u8)(v>>16); usz c=c1[k]++; v2[c]=v; } \
/* Table lookup */ \
u32 tv=v2[0]>>16; v2[n]=~v2[n-1]; \
for (usz l=0, i=0; l<n; ) { \
for (; ; l++) { u32 v=v2[l], t0=tv; tv=v>>16; if (tv!=t0) break; tab[(u16)v]=INIT; } \
for (; i<l; i++) { u32 j=(u16)v2[i]; r2[i]=tab[j]; tab[j]SETTAB; } \
} \
/* Radix unmoves */ \
*--c0 = *--c1 = 0; /* Move back one to account for increments in radix step */ \
for (usz i=0; i<n; i++) { r1[i]=r2[c1[k1[i]]++]; } \
for (usz i=0; i<n; i++) { r0[i]=r1[c0[k0[i]]++]; } \
decG(x); TFREE(alloc);
B memberOf_c1(B t, B x) {
if (isAtm(x) || RNK(x)==0) thrM("∊: Argument cannot have rank 0");
usz n = *SH(x);
@ -61,31 +87,8 @@ B memberOf_c1(B t, B x) {
u8 *r2 = (u8 *)(v2); // n [+.....] r2 n ##
u8 *r1 = (u8 *)(k1+n); // n [+..] r1 n ##
u8 *tab= (u8 *)(r1); // tn [+] tab tn #####
// Count keys
for (usz j=0; j<2*rx; j++) c0[j] = 0;
for (usz i=0; i<n; i++) { u32 v=v0[i]; c0[(u8)(v>>24)]++; c1[(u8)(v>>16)]++; }
// Exclusive prefix sum
usz s0=0, s1=0;
for (usz j=0; j<rx; j++) {
usz p0 = s0, p1 = s1;
s0 += c0[j]; s1 += c1[j];
c0[j] = p0; c1[j] = p1;
}
// Radix moves
for (usz i=0; i<n; i++) { u32 v=v0[i]; u8 k=k0[i]=(u8)(v>>24); usz c=c0[k]++; v1[c]=v; }
for (usz i=0; i<n; i++) { u32 v=v1[i]; u8 k=k1[i]=(u8)(v>>16); usz c=c1[k]++; v2[c]=v; }
// Table lookup
u32 tv=v2[0]>>16; v2[n]=~v2[n-1];
for (usz l=0, i=0; l<n; ) {
for (; ; l++) { u32 v=v2[l], t0=tv; tv=v>>16; if (tv!=t0) break; tab[(u16)v]=1; }
for (; i<l; i++) { u32 j=(u16)v2[i]; r2[i]=tab[j]; tab[j]=0; }
}
// Radix unmoves
*--c0 = *--c1 = 0; // Move back one to account for increments in radix step
for (usz i=0; i<n; i++) { r1[i]=r2[c1[k1[i]]++]; }
for (usz i=0; i<n; i++) { r0[i]=r1[c0[k0[i]]++]; }
decG(x); TFREE(alloc);
RADIX_LOOKUP_i32(1, =0)
return num_squeeze(r);
}
#undef BRUTE
@ -138,7 +141,6 @@ B count_c1(B t, B x) {
i32* r0; B r = m_i32arrv(&r0, n);
TALLOC(u8, alloc, 6*n+(4+4*(tn>n?tn:n)+(2*rx+1)*sizeof(usz)));
// timeline
// Allocations len count radix hash deradix bytes layout:
usz *c0 = (usz*)(alloc)+1; // rx [+++................] c0 rx #
@ -151,30 +153,7 @@ B count_c1(B t, B x) {
u32 *r1 = (u32*)v1; // n [+..] r1 4*n ########
u32 *tab= (u32*)v1; // tn [+] tab 4*tn ###########
// Count keys
for (usz j=0; j<2*rx; j++) c0[j] = 0;
for (usz i=0; i<n; i++) { u32 v=v0[i]; c0[(u8)(v>>24)]++; c1[(u8)(v>>16)]++; }
// Exclusive prefix sum
usz s0=0, s1=0;
for (usz j=0; j<rx; j++) {
usz p0 = s0, p1 = s1;
s0 += c0[j]; s1 += c1[j];
c0[j] = p0; c1[j] = p1;
}
// Radix moves
for (usz i=0; i<n; i++) { u32 v=v0[i]; u8 k=k0[i]=(u8)(v>>24); usz c=c0[k]++; v1[c]=v; }
for (usz i=0; i<n; i++) { u32 v=v1[i]; u8 k=k1[i]=(u8)(v>>16); usz c=c1[k]++; v2[c]=v; }
// Table lookup
u32 tv=v2[0]>>16; v2[n]=~v2[n-1];
for (usz l=0, i=0; l<n; ) {
for (; ; l++) { u32 v=v2[l], t0=tv; tv=v>>16; if (tv!=t0) break; tab[(u16)v]=0; }
for (; i<l; i++) { u32 j=(u16)v2[i]; r2[i]=tab[j]++; }
}
// Radix unmoves
*--c0 = *--c1 = 0; // Move back one to account for increments in radix step
for (usz i=0; i<n; i++) { r1[i]=r2[c1[k1[i]]++]; }
for (usz i=0; i<n; i++) { r0[i]=r1[c0[k0[i]]++]; }
decG(x); TFREE(alloc);
RADIX_LOOKUP_i32(0, ++)
return num_squeeze(r);
}
#undef BRUTE