File: logb.cl

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (33 lines) | stat: -rw-r--r-- 982 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
 
#include <clc/clc.h>
#include "math.h"
#include "../clcmacro.h"

_CLC_OVERLOAD _CLC_DEF float logb(float x) {
    int ax = as_int(x) & EXSIGNBIT_SP32;
    float s = -118 - clz(ax);
    float r = (ax >> EXPSHIFTBITS_SP32) - EXPBIAS_SP32;
    r = ax >= PINFBITPATT_SP32 ? as_float(ax) : r;
    r = ax < 0x00800000 ? s : r;
    r = ax == 0 ? as_float(NINFBITPATT_SP32) : r;
    return r;
}

_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, float, logb, float);

#ifdef cl_khr_fp64
#pragma OPENCL EXTENSION cl_khr_fp64 : enable

_CLC_OVERLOAD _CLC_DEF double logb(double x) {
    long ax = as_long(x) & EXSIGNBIT_DP64;
    double s = -1011L - clz(ax);
    double r = (int) (ax >> EXPSHIFTBITS_DP64) - EXPBIAS_DP64;
    r = ax >= PINFBITPATT_DP64 ? as_double(ax) : r;
    r = ax < 0x0010000000000000L ? s : r;
    r = ax == 0L ? as_double(NINFBITPATT_DP64) : r;
    return r;
}

_CLC_UNARY_VECTORIZE(_CLC_OVERLOAD _CLC_DEF, double, logb, double)
#endif

_CLC_DEFINE_UNARY_BUILTIN_FP16(logb)