forked from OSchip/llvm-project
14 lines
445 B
PHP
14 lines
445 B
PHP
|
_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE log10(__CLC_GENTYPE val) {
|
||
|
|
// log10(x) = log2(x) / log2(10)
|
||
|
|
// 1 / log2(10) = 0.30102999566 = log10(2)
|
||
|
|
// SP representation is 0.30103 (0x1.344136p-2)
|
||
|
|
// DP representation is 0.301029995659999993762312442414(0x1.34413509E61D8p-2)
|
||
|
|
#if __CLC_FPSIZE == 32
|
||
|
|
return log2(val) * 0x1.344136p-2f;
|
||
|
|
#elif __CLC_FPSIZE == 64
|
||
|
|
return log2(val) * 0x1.34413509E61D8p-2;
|
||
|
|
#else
|
||
|
|
#error unknown _CLC_FPSIZE
|
||
|
|
#endif
|
||
|
|
}
|