36 lines
713 B
Zig
36 lines
713 B
Zig
pub fn f64_from_bits(bits: u64) -> f64 {
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*(&f64)(&bits)
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}
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pub fn f64_to_bits(f: f64) -> u64 {
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*(&u64)(&f)
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}
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pub fn f64_get_pos_inf() -> f64 {
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f64_from_bits(0x7FF0000000000000)
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}
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pub fn f64_get_neg_inf() -> f64 {
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f64_from_bits(0xFFF0000000000000)
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}
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pub fn f64_is_nan(f: f64) -> bool {
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const bits = f64_to_bits(f);
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const exp: i64 = i64((bits >> 52) & ((1 << 11) - 1));
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const sig = (bits & ((1 << 52) - 1)) | (1 << 52);
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sig != 0 && exp == (1 << 11) - 1
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}
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pub fn f64_is_inf(f: f64) -> bool {
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f == f64_get_neg_inf() || f == f64_get_pos_inf()
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}
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pub fn min(T: type)(x: T, y: T) -> T {
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if (x < y) x else y
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}
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pub fn max(T: type)(x: T, y: T) -> T {
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if (x > y) x else y
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}
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