1 files changed, 0 insertions, 231 deletions
diff --git a/vendor/serde_json/src/lexical/rounding.rs b/vendor/serde_json/src/lexical/rounding.rs
deleted file mode 100644
index 6ec1292..0000000
--- a/vendor/serde_json/src/lexical/rounding.rs
+++ /dev/null
@@ -1,231 +0,0 @@
-// Adapted from https://github.com/Alexhuszagh/rust-lexical.
-
-//! Defines rounding schemes for floating-point numbers.
-
-use super::float::ExtendedFloat;
-use super::num::*;
-use super::shift::*;
-use core::mem;
-
-// MASKS
-
-/// Calculate a scalar factor of 2 above the halfway point.
-#[inline]
-pub(crate) fn nth_bit(n: u64) -> u64 {
-    let bits: u64 = mem::size_of::<u64>() as u64 * 8;
-    debug_assert!(n < bits, "nth_bit() overflow in shl.");
-
-    1 << n
-}
-
-/// Generate a bitwise mask for the lower `n` bits.
-#[inline]
-pub(crate) fn lower_n_mask(n: u64) -> u64 {
-    let bits: u64 = mem::size_of::<u64>() as u64 * 8;
-    debug_assert!(n <= bits, "lower_n_mask() overflow in shl.");
-
-    if n == bits {
-        u64::max_value()
-    } else {
-        (1 << n) - 1
-    }
-}
-
-/// Calculate the halfway point for the lower `n` bits.
-#[inline]
-pub(crate) fn lower_n_halfway(n: u64) -> u64 {
-    let bits: u64 = mem::size_of::<u64>() as u64 * 8;
-    debug_assert!(n <= bits, "lower_n_halfway() overflow in shl.");
-
-    if n == 0 {
-        0
-    } else {
-        nth_bit(n - 1)
-    }
-}
-
-/// Calculate a bitwise mask with `n` 1 bits starting at the `bit` position.
-#[inline]
-pub(crate) fn internal_n_mask(bit: u64, n: u64) -> u64 {
-    let bits: u64 = mem::size_of::<u64>() as u64 * 8;
-    debug_assert!(bit <= bits, "internal_n_halfway() overflow in shl.");
-    debug_assert!(n <= bits, "internal_n_halfway() overflow in shl.");
-    debug_assert!(bit >= n, "internal_n_halfway() overflow in sub.");
-
-    lower_n_mask(bit) ^ lower_n_mask(bit - n)
-}
-
-// NEAREST ROUNDING
-
-// Shift right N-bytes and round to the nearest.
-//
-// Return if we are above halfway and if we are halfway.
-#[inline]
-pub(crate) fn round_nearest(fp: &mut ExtendedFloat, shift: i32) -> (bool, bool) {
-    // Extract the truncated bits using mask.
-    // Calculate if the value of the truncated bits are either above
-    // the mid-way point, or equal to it.
-    //
-    // For example, for 4 truncated bytes, the mask would be b1111
-    // and the midway point would be b1000.
-    let mask: u64 = lower_n_mask(shift as u64);
-    let halfway: u64 = lower_n_halfway(shift as u64);
-
-    let truncated_bits = fp.mant & mask;
-    let is_above = truncated_bits > halfway;
-    let is_halfway = truncated_bits == halfway;
-
-    // Bit shift so the leading bit is in the hidden bit.
-    overflowing_shr(fp, shift);
-
-    (is_above, is_halfway)
-}
-
-// Tie rounded floating point to event.
-#[inline]
-pub(crate) fn tie_even(fp: &mut ExtendedFloat, is_above: bool, is_halfway: bool) {
-    // Extract the last bit after shifting (and determine if it is odd).
-    let is_odd = fp.mant & 1 == 1;
-
-    // Calculate if we need to roundup.
-    // We need to roundup if we are above halfway, or if we are odd
-    // and at half-way (need to tie-to-even).
-    if is_above || (is_odd && is_halfway) {
-        fp.mant += 1;
-    }
-}
-
-// Shift right N-bytes and round nearest, tie-to-even.
-//
-// Floating-point arithmetic uses round to nearest, ties to even,
-// which rounds to the nearest value, if the value is halfway in between,
-// round to an even value.
-#[inline]
-pub(crate) fn round_nearest_tie_even(fp: &mut ExtendedFloat, shift: i32) {
-    let (is_above, is_halfway) = round_nearest(fp, shift);
-    tie_even(fp, is_above, is_halfway);
-}
-
-// DIRECTED ROUNDING
-
-// Shift right N-bytes and round towards a direction.
-//
-// Return if we have any truncated bytes.
-#[inline]
-fn round_toward(fp: &mut ExtendedFloat, shift: i32) -> bool {
-    let mask: u64 = lower_n_mask(shift as u64);
-    let truncated_bits = fp.mant & mask;
-
-    // Bit shift so the leading bit is in the hidden bit.
-    overflowing_shr(fp, shift);
-
-    truncated_bits != 0
-}
-
-// Round down.
-#[inline]
-fn downard(_: &mut ExtendedFloat, _: bool) {}
-
-// Shift right N-bytes and round toward zero.
-//
-// Floating-point arithmetic defines round toward zero, which rounds
-// towards positive zero.
-#[inline]
-pub(crate) fn round_downward(fp: &mut ExtendedFloat, shift: i32) {
-    // Bit shift so the leading bit is in the hidden bit.
-    // No rounding schemes, so we just ignore everything else.
-    let is_truncated = round_toward(fp, shift);
-    downard(fp, is_truncated);
-}
-
-// ROUND TO FLOAT
-
-// Shift the ExtendedFloat fraction to the fraction bits in a native float.
-//
-// Floating-point arithmetic uses round to nearest, ties to even,
-// which rounds to the nearest value, if the value is halfway in between,
-// round to an even value.
-#[inline]
-pub(crate) fn round_to_float<F, Algorithm>(fp: &mut ExtendedFloat, algorithm: Algorithm)
-where
-    F: Float,
-    Algorithm: FnOnce(&mut ExtendedFloat, i32),
-{
-    // Calculate the difference to allow a single calculation
-    // rather than a loop, to minimize the number of ops required.
-    // This does underflow detection.
-    let final_exp = fp.exp + F::DEFAULT_SHIFT;
-    if final_exp < F::DENORMAL_EXPONENT {
-        // We would end up with a denormal exponent, try to round to more
-        // digits. Only shift right if we can avoid zeroing out the value,
-        // which requires the exponent diff to be < M::BITS. The value
-        // is already normalized, so we shouldn't have any issue zeroing
-        // out the value.
-        let diff = F::DENORMAL_EXPONENT - fp.exp;
-        if diff <= u64::FULL {
-            // We can avoid underflow, can get a valid representation.
-            algorithm(fp, diff);
-        } else {
-            // Certain underflow, assign literal 0s.
-            fp.mant = 0;
-            fp.exp = 0;
-        }
-    } else {
-        algorithm(fp, F::DEFAULT_SHIFT);
-    }
-
-    if fp.mant & F::CARRY_MASK == F::CARRY_MASK {
-        // Roundup carried over to 1 past the hidden bit.
-        shr(fp, 1);
-    }
-}
-
-// AVOID OVERFLOW/UNDERFLOW
-
-// Avoid overflow for large values, shift left as needed.
-//
-// Shift until a 1-bit is in the hidden bit, if the mantissa is not 0.
-#[inline]
-pub(crate) fn avoid_overflow<F>(fp: &mut ExtendedFloat)
-where
-    F: Float,
-{
-    // Calculate the difference to allow a single calculation
-    // rather than a loop, minimizing the number of ops required.
-    if fp.exp >= F::MAX_EXPONENT {
-        let diff = fp.exp - F::MAX_EXPONENT;
-        if diff <= F::MANTISSA_SIZE {
-            // Our overflow mask needs to start at the hidden bit, or at
-            // `F::MANTISSA_SIZE+1`, and needs to have `diff+1` bits set,
-            // to see if our value overflows.
-            let bit = (F::MANTISSA_SIZE + 1) as u64;
-            let n = (diff + 1) as u64;
-            let mask = internal_n_mask(bit, n);
-            if (fp.mant & mask) == 0 {
-                // If we have no 1-bit in the hidden-bit position,
-                // which is index 0, we need to shift 1.
-                let shift = diff + 1;
-                shl(fp, shift);
-            }
-        }
-    }
-}
-
-// ROUND TO NATIVE
-
-// Round an extended-precision float to a native float representation.
-#[inline]
-pub(crate) fn round_to_native<F, Algorithm>(fp: &mut ExtendedFloat, algorithm: Algorithm)
-where
-    F: Float,
-    Algorithm: FnOnce(&mut ExtendedFloat, i32),
-{
-    // Shift all the way left, to ensure a consistent representation.
-    // The following right-shifts do not work for a non-normalized number.
-    fp.normalize();
-
-    // Round so the fraction is in a native mantissa representation,
-    // and avoid overflow/underflow.
-    round_to_float::<F, _>(fp, algorithm);
-    avoid_overflow::<F>(fp);
-}