Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30631-5f55634266) Lines: 1467 1530 95.9 % Date: 2026-01-24 09:23:06 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296159
RgX_gtofp_bit	7028991
RgX_normalize1	35733
X2XP1	5989992
ZX_Uspensky	1313772
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15200
ZX_graeffe	5390
ZX_realroots_irred	48562
ZX_rescale2prim	2233608
ZX_sturm	6395
ZX_sturm_i	122971
ZX_sturm_irred	116576
ZX_sturmpart	1128273
ZX_to_ZiX	16449007
ZiX_sqr	99016144
_gen_nored	11204294
_gen_one	14472214
_gen_zero	326012
_intervalcmp	0
_mp_add	24662646
_mp_cmul	34772445
_mp_mul	4374561
_mp_sqr	6298333
_mp_sub	0
_sqrtnr	22591
a_posteriori_errors	536967
abs_update	8003445
abs_update_r	778540
all_roots	535870
append_clone	1613499
bkeval_single_power	5235655
check_ab	1178900
checkbound	2354930
checkvalidpol	266892
clean_roots	535917
cleanroots	231763
cmp_complex_appr	2237206
conformal_basecase	1403473
conformal_mapping	467788
conformal_pol	1403595
dblexp	6547207
dbllog2	302049506
dft	502226
dual_modulus	1012186
eval_rel_pol	13134146
fft	14154686
fft2	7462
findpower	40945027
fix_roots	536975
fix_roots1	398327
fujiwara_bound	2271064
fujiwara_bound_real	1406757
graeffe	49497460
homothetie	1609607
homothetie2n	9954407
homothetie_gauss	36492449
ind_maxlog2	902425
initdft	996063
isexactpol	239753
isexactscalar	931714
isreal	961621
isvalidcoeff	1228149
logmax_modulus	4449502
logmin_modulus	1614333
logmodulus	606540
logpre_modulus	606542
logradius	493834
lower_bound	40945412
mydbllog2i	226385199
mydbllog2r	56169908
mydbllogr	9544192
mygprec	63741176
mygprec_absolute	4337452
mygprec_special	536979
mygprecrc	215124560
mygprecrc_special	2178244
myshiftic	135828594
myshiftrc	35495173
newton_polygon	5505177
optimize_split	493839
parameters	493838
pol_to_gaussint	17583823
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166693
quicktofp	6976761
realroots	50627
refine_F	502226
refine_H	2459928
root_error	1911595
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288144
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494201
split_0_1	468149
split_0_2	468149
split_1	467787
split_2	493836
split_complete	1525374
split_fromU	493838
split_pols	166696
splitcauchy	166702
splitpoleval	5235678
tocomplex	1213153
update_radius	493837
usp	1125981

Generated by: LCOV version 1.16