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Remove unnecessary checks

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This commit is contained in:
Victor Zverovich 2019-02-04 07:01:33 -08:00
parent 22de5a755f
commit 1538336836
1 changed files with 6 additions and 3 deletions
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9
include/fmt/format-inl.h
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@ -470,7 +470,10 @@ FMT_FUNC bool grisu2_round(char* buf, int& size, int max_digits, uint64_t delta,
FMT_FUNC int grisu2_gen_digits(char* buf, uint32_t hi, uint64_t lo, int& exp,
uint64_t delta, const fp& one, const fp& diff,
int max_digits) {
assert(exp <= 10);
// hi cannot be zero because it contains top 32 bits of a product of two
// 64-bit numbers with MSB set (due to normalization) - 1, shifted right by at
// most 60 bits.
FMT_ASSERT(hi != 0, "");
int size = 0;
// Generate digits for the most significant part (hi). This can produce up to
// 10 digits.
@ -522,7 +525,7 @@ FMT_FUNC int grisu2_gen_digits(char* buf, uint32_t hi, uint64_t lo, int& exp,
default:
FMT_ASSERT(false, "invalid number of digits");
}
if (digit != 0 || size != 0) buf[size++] = static_cast<char>('0' + digit);
buf[size++] = static_cast<char>('0' + digit);
--exp;
uint64_t remainder = (static_cast<uint64_t>(hi) << -one.e) + lo;
if (remainder <= delta || size > max_digits) {
@ -537,7 +540,7 @@ FMT_FUNC int grisu2_gen_digits(char* buf, uint32_t hi, uint64_t lo, int& exp,
lo *= 10;
delta *= 10;
char digit = static_cast<char>(lo >> -one.e);
if (digit != 0 || size != 0) buf[size++] = static_cast<char>('0' + digit);
buf[size++] = static_cast<char>('0' + digit);
lo &= one.f - 1;
--exp;
if (lo < delta || size > max_digits) {