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

Generated by: LCOV version 1.16