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ecf6d3c6ce
Currently, attributes for `no-panic` are gated behind both the `test` config and `assert_no_panic`, because `no-panic` is a dev dependency (so only available with test configuration). However, we only emit `assert_no_panic` when the test config is also set anyway, so there isn't any need to gate on both. Replace gates on `all(test, assert_no_panic)` with only `assert_no_panic`. This is simpler, and also has the benefit that attempting to check for panics without `--test` errors.
117 lines
2.9 KiB
Rust
117 lines
2.9 KiB
Rust
/// Absolute value (magnitude) (f16)
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///
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/// Calculates the absolute value (magnitude) of the argument `x`,
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/// by direct manipulation of the bit representation of `x`.
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#[cfg(f16_enabled)]
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#[cfg_attr(assert_no_panic, no_panic::no_panic)]
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pub fn fabsf16(x: f16) -> f16 {
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super::generic::fabs(x)
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}
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/// Absolute value (magnitude) (f32)
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///
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/// Calculates the absolute value (magnitude) of the argument `x`,
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/// by direct manipulation of the bit representation of `x`.
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#[cfg_attr(assert_no_panic, no_panic::no_panic)]
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pub fn fabsf(x: f32) -> f32 {
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select_implementation! {
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name: fabsf,
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use_arch: all(target_arch = "wasm32", intrinsics_enabled),
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args: x,
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}
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super::generic::fabs(x)
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}
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/// Absolute value (magnitude) (f64)
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///
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/// Calculates the absolute value (magnitude) of the argument `x`,
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/// by direct manipulation of the bit representation of `x`.
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#[cfg_attr(assert_no_panic, no_panic::no_panic)]
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pub fn fabs(x: f64) -> f64 {
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select_implementation! {
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name: fabs,
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use_arch: all(target_arch = "wasm32", intrinsics_enabled),
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args: x,
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}
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super::generic::fabs(x)
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}
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/// Absolute value (magnitude) (f128)
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///
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/// Calculates the absolute value (magnitude) of the argument `x`,
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/// by direct manipulation of the bit representation of `x`.
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#[cfg(f128_enabled)]
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#[cfg_attr(assert_no_panic, no_panic::no_panic)]
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pub fn fabsf128(x: f128) -> f128 {
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super::generic::fabs(x)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::support::Float;
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/// Based on https://en.cppreference.com/w/cpp/numeric/math/fabs
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fn spec_test<F: Float>(f: impl Fn(F) -> F) {
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assert_biteq!(f(F::ZERO), F::ZERO);
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assert_biteq!(f(F::NEG_ZERO), F::ZERO);
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assert_biteq!(f(F::INFINITY), F::INFINITY);
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assert_biteq!(f(F::NEG_INFINITY), F::INFINITY);
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assert!(f(F::NAN).is_nan());
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// Not spec rewquired but we expect it
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assert!(f(F::NAN).is_sign_positive());
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assert!(f(F::from_bits(F::NAN.to_bits() | F::SIGN_MASK)).is_sign_positive());
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}
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#[test]
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#[cfg(f16_enabled)]
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fn sanity_check_f16() {
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assert_eq!(fabsf16(-1.0f16), 1.0);
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assert_eq!(fabsf16(2.8f16), 2.8);
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}
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#[test]
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#[cfg(f16_enabled)]
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fn spec_tests_f16() {
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spec_test::<f16>(fabsf16);
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}
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#[test]
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fn sanity_check_f32() {
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assert_eq!(fabsf(-1.0f32), 1.0);
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assert_eq!(fabsf(2.8f32), 2.8);
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}
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#[test]
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fn spec_tests_f32() {
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spec_test::<f32>(fabsf);
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}
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#[test]
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fn sanity_check_f64() {
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assert_eq!(fabs(-1.0f64), 1.0);
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assert_eq!(fabs(2.8f64), 2.8);
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}
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#[test]
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fn spec_tests_f64() {
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spec_test::<f64>(fabs);
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}
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#[test]
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#[cfg(f128_enabled)]
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fn sanity_check_f128() {
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assert_eq!(fabsf128(-1.0f128), 1.0);
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assert_eq!(fabsf128(2.8f128), 2.8);
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}
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#[test]
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#[cfg(f128_enabled)]
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fn spec_tests_f128() {
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spec_test::<f128>(fabsf128);
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}
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}
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