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#define Z3H    V24

#define ZER   V26
#define SEL1  V27
#define CAR1  V28
#define CAR2  V29
/*
 * http://www.hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2004-hmv
 * Cost: 4M + 4S + 1*half + 5add + 2*2 + 1*3.
 * Source: 2004 Hankerson–Menezes–Vanstone, page 91.
 * 	A  = 3(X₁-Z₁²)×(X₁+Z₁²)
 * 	B  = 2Y₁
 * 	Z₃ = B×Z₁
 * 	C  = B²
 * 	D  = C×X₁
 * 	X₃ = A²-2D

// GC rate.
// Next GC is after we've allocated an extra amount of memory proportional to
// the amount already in use. The proportion is controlled by GOGC environment variable
// (100 by default). If GOGC=100 and we're using 4M, we'll GC again when we get to 8M
// (this mark is computed by the gcController.heapGoal method). This keeps the GC cost in
// linear proportion to the allocation cost. Adjusting GOGC just changes the linear constant

#define Z3H    V24

#define ZER   V26
#define SEL1  V27
#define CAR1  V28
#define CAR2  V29
/*
 * https://www.hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2004-hmv
 * Cost: 4M + 4S + 1*half + 5add + 2*2 + 1*3.
 * Source: 2004 Hankerson–Menezes–Vanstone, page 91.
 * 	A  = 3(X₁-Z₁²)×(X₁+Z₁²)
 * 	B  = 2Y₁
 * 	Z₃ = B×Z₁
 * 	C  = B²
 * 	D  = C×X₁
 * 	X₃ = A²-2D

	//
	//       Platform  Addr bits  Arena size  L1 entries   L2 entries
	// --------------  ---------  ----------  ----------  -----------
	//       */64-bit         48        64MB           1    4M (32MB)
	// windows/64-bit         48         4MB          64    1M  (8MB)
	//      ios/arm64         33         4MB           1  2048  (8KB)
	//       */32-bit         32         4MB           1  1024  (4KB)