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 30702-bddb8d6928) Lines: 1467 1530 95.9 % Date: 2026-02-23 02:23:56 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	48
FFT_i	84
FFTinv	48
QX_complex_roots	252208
RgX_gtofp_bit	5959799
RgX_normalize1	30428
X2XP1	4825520
ZX_Uspensky	1056309
ZX_Uspensky_equal	21
ZX_Uspensky_equal_yes	10
ZX_Uspensky_no	16
ZX_deg1root	12933
ZX_graeffe	4596
ZX_realroots_irred	41345
ZX_rescale2prim	1799361
ZX_sturm	5310
ZX_sturm_i	104610
ZX_sturm_irred	99300
ZX_sturmpart	899007
ZX_to_ZiX	13843968
ZiX_sqr	84142266
_gen_nored	9311845
_gen_one	12058992
_gen_zero	275098
_intervalcmp	0
_mp_add	19364586
_mp_cmul	27846418
_mp_mul	3356261
_mp_sqr	5026890
_mp_sub	0
_sqrtnr	19226
a_posteriori_errors	458560
abs_update	6744632
abs_update_r	663364
all_roots	457623
append_clone	1374278
bkeval_single_power	4378465
check_ab	941332
checkbound	1880480
checkvalidpol	228512
clean_roots	457657
cleanroots	198649
cmp_complex_appr	1895913
conformal_basecase	1193115
conformal_mapping	397674
conformal_pol	1193208
dblexp	5554339
dbllog2	255282000
dft	426715
dual_modulus	859782
eval_rel_pol	11137496
fft	11891275
fft2	6396
findpower	34808587
fix_roots	458560
fix_roots1	340335
fujiwara_bound	1867365
fujiwara_bound_real	1136368
graeffe	42071133
homothetie	1366357
homothetie2n	8449452
homothetie_gauss	31026311
ind_maxlog2	767108
initdft	846465
isexactpol	205449
isexactscalar	798161
isreal	817424
isvalidcoeff	1049696
logmax_modulus	3782276
logmin_modulus	1372326
logmodulus	514270
logpre_modulus	514270
logradius	419750
lower_bound	34808587
mydbllog2i	191806337
mydbllog2r	46888500
mydbllogr	8052604
mygprec	54166026
mygprec_absolute	3688698
mygprec_special	458560
mygprecrc	181905723
mygprecrc_special	1856620
myshiftic	115274367
myshiftrc	30054077
newton_polygon	4667176
optimize_split	419750
parameters	419750
pol_to_gaussint	14919772
polgraeffe	10
polmod_to_embed	69
polrootsbound	23057
polrootsbound_i	23052
polsolve	139610
quicktofp	5761789
realroots	42325
refine_F	426715
refine_H	2094656
root_error	1627595
roots	6823
roots_aux	205472
roots_com	205449
rootsdeg0	30
scalepol	3645294
scalepol2n	0
sol_ok	2780
solve_exact_pol	198073
split_0	420042
split_0_1	397966
split_0_2	397966
split_1	397674
split_2	419750
split_complete	1298644
split_fromU	419750
split_pols	139610
splitcauchy	139610
splitpoleval	4378465
tocomplex	1030828
update_radius	419750
usp	905820

Generated by: LCOV version 1.16