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more intuitive left shift and right shift operators

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Before:
 * << is left shift, not allowed to shift 1 bits out
 * <<% is left shift, allowed to shift 1 bits out
 * >> is right shift, allowed to shift 1 bits out

After:
 * << is left shift, allowed to shift 1 bits out
 * >> is right shift, allowed to shift 1 bits out
 * @shlExact is left shift, not allowed to shift 1 bits out
 * @shrExact is right shift, not allowed to shift 1 bits out

Closes #413
This commit is contained in:
Andrew Kelley
2017-08-09 10:09:38 -04:00
parent 54675b060a
commit 35d3444e27
28 changed files with 274 additions and 128 deletions
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2
src/bigint.cpp
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@@ -799,7 +799,7 @@ void bigint_shl(BigInt *dest, const BigInt *op1, const BigInt *op2) {
bigint_normalize(dest);
}
void bigint_shl_wrap(BigInt *dest, const BigInt *op1, const BigInt *op2, size_t bit_count, bool is_signed) {
void bigint_shl_trunc(BigInt *dest, const BigInt *op1, const BigInt *op2, size_t bit_count, bool is_signed) {
BigInt unwrapped = {0};
bigint_shl(&unwrapped, op1, op2);
bigint_truncate(dest, &unwrapped, bit_count, is_signed);