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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
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@ -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);
}
}
}