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hyperrogue/util.cpp
Zeno Rogue 36998c9a40 gcd
2017-12-14 02:52:00 +01:00

95 lines
2.6 KiB
C++

// Hyperbolic Rogue
// Copyright (C) 2011-2016 Zeno Rogue, see 'hyper.cpp' for details
// basic utility functions
long double sqr(long double x) { return x*x; }
string its(int i) { char buf[64]; sprintf(buf, "%d", i); return buf; }
string fts(float x) { char buf[64]; sprintf(buf, "%4.2f", x); return buf; }
string fts3(float x) { char buf[64]; sprintf(buf, "%5.3f", x); return buf; }
string fts4(float x) { char buf[64]; sprintf(buf, "%6.4f", x); return buf; }
string ftssmart(ld x) {
if(x == int(x)) return its(int(x));
if(abs(x) > 1) return fts4(x);
char buf[64]; sprintf(buf, "%.10e", (float) x);
return buf;
}
string cts(char c) { char buf[8]; buf[0] = c; buf[1] = 0; return buf; }
string llts(long long i) {
// sprintf does not work on Windows IIRC
if(i < 0) return "-" + llts(-i);
if(i < 10) return its((int) i);
return llts(i/10) + its(i%10);
}
string itsh(int i) {static char buf[16]; sprintf(buf, "%03X", i); return buf; }
string itsh2(int i) {static char buf[16]; sprintf(buf, "%02X", i); return buf; }
string itsh8(int i) {static char buf[16]; sprintf(buf, "%08X", i); return buf; }
int gcd(int i, int j) {
return i ? gcd(j%i, i) : j;
}
// debug utilities
extern FILE *debugfile;
extern int debugflags;
#if ISANDROID
#define DEBB(r,x)
#else
#define DEBB(r,x) { if(debugfile && (!(r) || (debugflags & (r)))) { fprintf x; fflush(debugfile); } }
#endif
#define DF_INIT 0 // always display these
#define DF_MSG 0 // always display these
#define DF_STEAM 1
#define DF_GRAPH 2
#define DF_TURN 4
#define DF_FIELD 8
#if CAP_PROFILING
#include <sys/time.h>
long long getms() {
struct timeval tval;
gettimeofday(&tval, NULL);
return tval.tv_sec * 1000000 + tval.tv_usec;
}
#define FRAMES 64
#define CATS 16
long long proftable[16][FRAMES];
int pframeid;
void profile_frame() {
pframeid++; pframeid %= FRAMES;
for(int t=0; t<16; t++) proftable[t][pframeid] = 0;
}
void profile_start(int t) { proftable[t][pframeid] -= getms(); }
void profile_stop(int t) { proftable[t][pframeid] += getms(); }
void profile_info() {
for(int t=0; t<16; t++) {
sort(proftable[t], proftable[t]+FRAMES);
if(proftable[t][FRAMES-1] == 0) continue;
long long sum = 0;
for(int f=0; f<FRAMES; f++) sum += proftable[t][f];
printf("Category %d: avg = %Ld, %Ld..%Ld..%Ld..%Ld..%Ld\n",
t, sum / FRAMES, proftable[t][0], proftable[t][16], proftable[t][32],
proftable[t][48], proftable[t][63]);
}
}
#else
#define profile_frame()
#define profile_start(t)
#define profile_stop(t)
#define profile_info()
#endif