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Add portable sincos polyfill (#529)

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Max Graey 2019-03-06 21:20:18 +02:00 committed by Daniel Wirtz
parent 783dd32c2e
commit f841f0fe1f
3 changed files with 48 additions and 15 deletions
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25
std/assembly/math.ts
View File

@ -2329,18 +2329,21 @@ export namespace NativeMathf {
}
return tan_kernf(x, 0);
}
if (ix <= 0x407b53d1) { /* |x| ~<= 5π/4 */
if (ix <= 0x4016cbe3) { /* |x| ~<= 3π/4 */
return tan_kernf((sign ? x + t1pio2 : x - t1pio2), 1);
} else {
return tan_kernf((sign ? x + t2pio2 : x - t2pio2), 0);
if (ASC_SHRINK_LEVEL < 1) {
if (ix <= 0x407b53d1) { /* |x| ~<= 5π/4 */
if (ix <= 0x4016cbe3) { /* |x| ~<= 3π/4 */
return tan_kernf((sign ? x + t1pio2 : x - t1pio2), 1);
} else {
return tan_kernf((sign ? x + t2pio2 : x - t2pio2), 0);
}
}
}
if (ix <= 0x40e231d5) { /* |x| ~<= 9π/4 */
if (ix <= 0x40afeddf) { /* |x| ~<= 7π/4 */
return tan_kernf((sign ? x + t3pio2 : x - t3pio2), 1);
} else {
return tan_kernf((sign ? x + t4pio2 : x - t4pio2), 0);
if (ix <= 0x40e231d5) { /* |x| ~<= 9π/4 */
if (ix <= 0x40afeddf) { /* |x| ~<= 7π/4 */
return tan_kernf((sign ? x + t3pio2 : x - t3pio2), 1);
} else {
return tan_kernf((sign ? x + t4pio2 : x - t4pio2), 0);
}
}
}

11
std/portable/index.d.ts vendored
View File

@ -100,13 +100,17 @@ declare function isFinite<T = f32 | f64>(value: T): bool;
declare function isInteger(value: any): value is number;
/** Tests if the specified value is a valid float. Can't distinguish a float from an integer. */
declare function isFloat(value: any): value is number;
/** Tests if the specified value is of a nullable reference type. */
declare function isNullable(value: any): bool;
/** Tests if the specified value is of a reference type. */
declare function isReference(value: any): value is object | string;
/** Tests if the specified value is of a function type */
declare function isFunction(value: any): value is Function;
/** Tests if the specified value can be used as a string. */
declare function isString(value: any): value is string | String;
/** Tests if the specified value can be used as an array. */
declare function isArray(value: any): value is Array<any>;
/** Tests if the specified type *or* expression can be used as an array like object. Compiles to a constant. */
/** Tests if the specified type *or* expression can be used as an array like object. */
declare function isArrayLike(value: any): value is ArrayLike<any>;
/** Tests if the specified expression resolves to a defined element. */
declare function isDefined(expression: any): bool;
@ -567,6 +571,10 @@ interface IMath {
readonly PI: f64;
readonly SQRT1_2: f64;
readonly SQRT2: f64;
sincos_sin: f64;
sincos_cos: f64;
abs(x: f64): f64;
acos(x: f64): f64;
acosh(x: f64): f64;
@ -598,6 +606,7 @@ interface IMath {
sign(x: f64): f64;
signbit(x: f64): bool;
sin(x: f64): f64;
sincos(x: f64): f64;
sinh(x: f64): f64;
sqrt(x: f64): f64;
tan(x: f64): f64;

27
std/portable/index.js
View File

@ -206,10 +206,18 @@ globalScope["isFloat"] = function isFloat(arg) {
return typeof arg === "number";
};
globalScope["isNullable"] = function isNullable(arg) {
return true;
}
globalScope["isReference"] = function isReference(arg) {
return typeof arg === "object" || typeof arg === "string";
};
globalScope["isFunction"] = function isFunction(arg) {
return typeof arg === "function";
}
globalScope["isString"] = function isString(arg) {
return typeof arg === "string" || arg instanceof String;
};
@ -244,9 +252,22 @@ globalScope["fmodf"] = function fmodf(x, y) {
};
globalScope["JSMath"] = Math;
globalScope["JSMath"].signbit = function signbit(x) {
F64[0] = x; return Boolean((U64[1] >>> 31) & (x == x));
}
Object.defineProperties(globalScope["JSMath"], {
sincos_sin: { value: 0.0, writable: true },
sincos_cos: { value: 0.0, writable: true },
signbit: {
value: function signbit(x) {
F64[0] = x; return Boolean((U64[1] >>> 31) & (x == x));
}
},
sincos: {
value: function sincos(x) {
this.sincos_sin = Math.sin(x);
this.sincos_cos = Math.cos(x);
}
}
});
globalScope["memory"] = (() => {
var HEAP = new Uint8Array(0);