authorgravatar for liam@bumblebee.net.nzMovingtoMars <liam@bumblebee.net.nz> 2016-01-29 21:12:33+13:00
committergravatar for liam@bumblebee.net.nzMovingtoMars <liam@bumblebee.net.nz> 2016-01-29 21:12:33+13:00
log850f6d2d0266c0b502f0f0aa39ae32de469d03d9
tree54b242d01b593ef81dfab78f5c2cef04c63b3a86
parent90a32629c0120acba881c87e84b7291732703fbe

better f64_is_nan

1 files changed, 5 insertions(+), 1 deletions(-)

std/math.zig+5-1
...@@ -17,7 +17,11 @@ pub fn f64_get_neg_inf() -> f64 {...@@ -17,7 +17,11 @@ pub fn f64_get_neg_inf() -> f64 {
17}17}
1818
19pub fn f64_is_nan(f: f64) -> bool {19pub fn f64_is_nan(f: f64) -> bool {
20 0x7FFFFFFFFFFFFFFF == f64_to_bits(f) // TODO improve to catch all cases20 const bits = f64_to_bits(f);
21 const exp: i64 = i64((bits >> 52) & ((1 << 11) - 1));
22 const sig = (bits & ((1 << 52) - 1)) | (1 << 52);
23
24 sig != 0 && exp == (1 << 11) - 1
21}25}
2226
23pub fn f64_is_inf(f: f64) -> bool {27pub fn f64_is_inf(f: f64) -> bool {